Annual report pursuant to Section 13 and 15(d)

Common Stock - Summary of Stock Options Outstanding Regarding Number of Common Shares Issuable upon Exercise of Outstanding Options (Detail)

v2.4.1.9
Common Stock - Summary of Stock Options Outstanding Regarding Number of Common Shares Issuable upon Exercise of Outstanding Options (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Number of Outstanding Options 1,283,419us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Exercise Price Range, Weighted Average Exercise Price $ 10.55us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Exercise Price Range, Weighted Average Remaining Contractual Life 6 years 3 months 18 days
Range one [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 2.11us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeOneMember
Exercise Price Range, Upper Range Limit $ 2.85us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeOneMember
Exercise Price Range, Number of Outstanding Options 81,000us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeOneMember
Exercise Price Range, Weighted Average Exercise Price $ 2.50us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeOneMember
Exercise Price Range, Weighted Average Remaining Contractual Life 6 years 18 days
Range two [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 2.86us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTwoMember
Exercise Price Range, Upper Range Limit $ 3.09us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTwoMember
Exercise Price Range, Number of Outstanding Options 219,125us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTwoMember
Exercise Price Range, Weighted Average Exercise Price $ 3.00us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTwoMember
Exercise Price Range, Weighted Average Remaining Contractual Life 1 year
Range three [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 3.10us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeThreeMember
Exercise Price Range, Upper Range Limit $ 10.27us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeThreeMember
Exercise Price Range, Number of Outstanding Options 119,879us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeThreeMember
Exercise Price Range, Weighted Average Exercise Price $ 4.92us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeThreeMember
Exercise Price Range, Weighted Average Remaining Contractual Life 8 years 7 days
Range four [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 10.28us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFourMember
Exercise Price Range, Upper Range Limit $ 11.70us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFourMember
Exercise Price Range, Number of Outstanding Options 31,000us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFourMember
Exercise Price Range, Weighted Average Exercise Price $ 10.90us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFourMember
Exercise Price Range, Weighted Average Remaining Contractual Life 8 years 1 month 2 days
Range five [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 11.71us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFiveMember
Exercise Price Range, Upper Range Limit $ 11.84us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFiveMember
Exercise Price Range, Number of Outstanding Options 226,997us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFiveMember
Exercise Price Range, Weighted Average Exercise Price $ 11.79us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeFiveMember
Exercise Price Range, Weighted Average Remaining Contractual Life 9 years 2 months 12 days
Range six [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 11.85us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSixMember
Exercise Price Range, Upper Range Limit $ 11.99us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSixMember
Exercise Price Range, Number of Outstanding Options 165,571us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSixMember
Exercise Price Range, Weighted Average Exercise Price $ 11.95us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSixMember
Exercise Price Range, Weighted Average Remaining Contractual Life 8 years 1 month 21 days
Range seven [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 12.00us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSevenMember
Exercise Price Range, Upper Range Limit $ 13.06us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSevenMember
Exercise Price Range, Number of Outstanding Options 141,175us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSevenMember
Exercise Price Range, Weighted Average Exercise Price $ 12.88us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeSevenMember
Exercise Price Range, Weighted Average Remaining Contractual Life 7 years 3 months 4 days
Range eight [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 13.07us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeEightMember
Exercise Price Range, Upper Range Limit $ 15.74us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeEightMember
Exercise Price Range, Number of Outstanding Options 41,176us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeEightMember
Exercise Price Range, Weighted Average Exercise Price $ 14.28us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeEightMember
Exercise Price Range, Weighted Average Remaining Contractual Life 6 years 5 months 16 days
Range nine [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 15.75us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeNineMember
Exercise Price Range, Upper Range Limit $ 16.40us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeNineMember
Exercise Price Range, Number of Outstanding Options 119,750us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeNineMember
Exercise Price Range, Weighted Average Exercise Price $ 15.97us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeNineMember
Exercise Price Range, Weighted Average Remaining Contractual Life 5 years 11 months 12 days
Range ten [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit $ 16.41us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTenMember
Exercise Price Range, Upper Range Limit $ 22.28us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTenMember
Exercise Price Range, Number of Outstanding Options 137,746us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTenMember
Exercise Price Range, Weighted Average Exercise Price $ 20.19us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ogxi_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTenMember
Exercise Price Range, Weighted Average Remaining Contractual Life 5 years 2 months 19 days