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Basis of Presentation, Class of Warrant or Right (Details) (USD $)
Feb. 28, 2015
Aug. 31, 2014
Mar. 18, 2013
Class of Warrant or Right [Line Items]      
Right to purchase minority equity position (in shares) 1,172,513,618us-gaap_CommonStockSharesIssued 1,028,180,150us-gaap_CommonStockSharesIssued  
Warrants Exercisable in March 2016 [Member]      
Class of Warrant or Right [Line Items]      
Warrant issued to purchase common stock (in shares) 22,696,912us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= wxz_WarrantsExercisableInMarch2016Member
   
Warrant exercise price (in dollars per share) 51.50us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= wxz_WarrantsExercisableInMarch2016Member
   
Warrants Exercisable in March 2017 [Member]      
Class of Warrant or Right [Line Items]      
Warrant issued to purchase common stock (in shares) 22,696,912us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= wxz_WarrantsExercisableInMarch2017Member
   
Warrant exercise price (in dollars per share) 52.50us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= wxz_WarrantsExercisableInMarch2017Member
   
AmerisourceBergen Corporation [Member]      
Class of Warrant or Right [Line Items]      
Percentge of fully diluted equity (in hundredths)     7.00%wxz_PercentageOfFullyDilutedEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= wxz_AmerisourceBergenCorporationMember
Maximum [Member] | AmerisourceBergen Corporation [Member]      
Class of Warrant or Right [Line Items]      
Right to purchase minority equity position (in shares)     19,859,795us-gaap_CommonStockSharesIssued
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= wxz_AmerisourceBergenCorporationMember