Annual report pursuant to Section 13 and 15(d)

Income Tax - Summary of Investment Tax Credits and Non-Capital Losses and Net Operating Losses (Detail)

v2.4.1.9
Income Tax - Summary of Investment Tax Credits and Non-Capital Losses and Net Operating Losses (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses $ 151,112us-gaap_OperatingLossCarryforwards $ 150,200us-gaap_OperatingLossCarryforwards
Non-capital Losses 96,307ogxi_NonCapitalLossCarryforwardsAmount  
2012 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 44us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearOneMember
 
2018 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 10,795us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSevenMember
 
2019 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 32us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearEightMember
 
2020 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 2,745us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearNineMember
 
2021 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 400us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTenMember
 
2022 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 11,766us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearElevenMember
 
2023 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 10,785us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwelveMember
 
2024 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 16,814us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearThirteenMember
 
2025 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 2,062us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearFourteenMember
 
2026 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 27,157us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearFifteenMember
 
Non-capital Losses 7,335ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearFifteenMember
 
2027 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 22,225us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSixteenMember
 
Non-capital Losses 4,949ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSixteenMember
 
2028 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 12,648us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSeventeenMember
 
Non-capital Losses 8,020ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSeventeenMember
 
2029 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 4,358us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearEighteenMember
 
Non-capital Losses (9)ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearEighteenMember
 
2030 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 5,034us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearNineteenMember
 
Non-capital Losses 6,288ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearNineteenMember
 
2031 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 6,200us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyMember
 
Non-capital Losses 12,121ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyMember
 
2032 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 8,418us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyOneMember
 
Non-capital Losses 17,278ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyOneMember
 
2033 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 2,520us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyTwoMember
 
Non-capital Losses 23,240ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyTwoMember
 
2034 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Net Operating Losses 7,109us-gaap_OperatingLossCarryforwards
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyThreeMember
 
Non-capital Losses 17,085ogxi_NonCapitalLossCarryforwardsAmount
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyThreeMember
 
Investment tax credits carryforwards [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 4,448us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
 
Investment tax credits carryforwards [Member] | 2018 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 150us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSevenMember
 
Investment tax credits carryforwards [Member] | 2019 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 102us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearEightMember
 
Investment tax credits carryforwards [Member] | 2020 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 76us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearNineMember
 
Investment tax credits carryforwards [Member] | 2021 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 69us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTenMember
 
Investment tax credits carryforwards [Member] | 2022 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 105us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearElevenMember
 
Investment tax credits carryforwards [Member] | 2023 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 96us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwelveMember
 
Investment tax credits carryforwards [Member] | 2024 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 111us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearThirteenMember
 
Investment tax credits carryforwards [Member] | 2025 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 144us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearFourteenMember
 
Investment tax credits carryforwards [Member] | 2026 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 400us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearFifteenMember
 
Investment tax credits carryforwards [Member] | 2027 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 173us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSixteenMember
 
Investment tax credits carryforwards [Member] | 2028 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 390us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearSeventeenMember
 
Investment tax credits carryforwards [Member] | 2029 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 317us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearEighteenMember
 
Investment tax credits carryforwards [Member] | 2030 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 346us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearNineteenMember
 
Investment tax credits carryforwards [Member] | 2031 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 608us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyMember
 
Investment tax credits carryforwards [Member] | 2032 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 505us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyOneMember
 
Investment tax credits carryforwards [Member] | 2033 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits 422us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyTwoMember
 
Investment tax credits carryforwards [Member] | 2034 [Member]    
Schedule Of Tax Credits And Losses Carry Forward Expiration [Line Items]    
Investment tax credits $ 434us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_InvestmentCreditMember
/ us-gaap_TaxPeriodAxis
= ogxi_CarryForwardExpirationYearTwentyThreeMember