Annual report pursuant to Section 13 and 15(d)

Excess Lease Liability - Summary of Excess Lease Facility Liability (Detail)

v2.4.1.9
Excess Lease Liability - Summary of Excess Lease Facility Liability (Detail) (Excess lease facility [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Excess lease facility [Member]
   
Restructuring Cost and Reserve [Line Items]    
Current portion of excess lease facility, Liability $ 194us-gaap_RestructuringReserveCurrent
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
$ 1,081us-gaap_RestructuringReserveCurrent
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
Long-term portion of excess lease facility, Liability   2,825us-gaap_RestructuringReserveNoncurrent
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
Liability, Total 194us-gaap_RestructuringReserve
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
3,906us-gaap_RestructuringReserve
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
Current portion of excess lease facility, Amortization of excess lease facility 33ogxi_AmortizationOfExcessLeaseFacilityCurrentPortion
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
 
Long-term portion of excess lease facility, Amortization of excess lease facility (818)ogxi_AmortizationOfExcessLeaseFacilityNonCurrentPortion
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
 
Amortization of excess lease facility (785)ogxi_AmortizationOfExcessLeaseFacility
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
 
Current portion of excess lease facility, Reduction of liability (920)ogxi_ReductionOfLiabilityCurrentPortion
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
 
Long-term portion of excess lease facility, Reduction of liability (2,007)ogxi_ReductionOfLiabilityNoncurrentPortion
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
 
Reduction of liability $ (2,927)ogxi_ReductionOfLiability
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember