Annual report pursuant to Section 13 and 15(d)

Capital Stock - Summary of Common Stock Warrants Outstanding (Details)

v3.6.0.2
Capital Stock - Summary of Common Stock Warrants Outstanding (Details) - $ / shares
 1 Months Ended 12 Months Ended
Feb. 29, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Mar. 31, 2012
Class Of Warrant Or Right [Line Items]          
Expiration Date 2021-02        
Exercise price of warrants (in dollars per share) $ 15.40        
Number of Shares   498,556 908,298    
Five Year Warrants Issued in December 2011 [Member] | Stockholders' Equity (Deficit) [Member]          
Class Of Warrant Or Right [Line Items]          
Issuance Date   2011-12      
Expiration Date   2016-12      
Exercise price of warrants (in dollars per share)   $ 22.80      
Number of Shares     13,158    
Five Year Warrants Issued in March 2012 [Member]          
Class Of Warrant Or Right [Line Items]          
Exercise price of warrants (in dollars per share)         $ 35.20
Number of Shares   479,277 479,277   741,729
Five Year Warrants Issued in March 2012 [Member] | Contingent Warrant Liabilities [Member]          
Class Of Warrant Or Right [Line Items]          
Issuance Date   2012-03      
Expiration Date   2017-03      
Exercise price of warrants (in dollars per share)   $ 35.20      
Number of Shares   479,277 479,277    
Five Year Warrants Issued in September 2012 [Member] | Stockholders' Equity (Deficit) [Member]          
Class Of Warrant Or Right [Line Items]          
Issuance Date   2012-09      
Expiration Date   2017-09      
Exercise price of warrants (in dollars per share)   $ 70.80      
Number of Shares   1,967 1,967    
Two Year Warrants Issued in December 2014 [Member]          
Class Of Warrant Or Right [Line Items]          
Exercise price of warrants (in dollars per share)       $ 158.01  
Number of Shares       404,833  
Two Year Warrants Issued in December 2014 [Member] | Contingent Warrant Liabilities [Member]          
Class Of Warrant Or Right [Line Items]          
Issuance Date   2014-12      
Expiration Date   2016-12      
Exercise price of warrants (in dollars per share)   $ 158.01      
Number of Shares     404,833    
Five Year Warrants Issued in February 2015 [Member] | Stockholders' Equity (Deficit) [Member]          
Class Of Warrant Or Right [Line Items]          
Issuance Date   2015-02      
Expiration Date   2020-02      
Exercise price of warrants (in dollars per share)   $ 66.20      
Number of Shares   9,063 9,063    
Five Year Warrants Issued in February 2016 [Member] | Stockholders' Equity (Deficit) [Member]          
Class Of Warrant Or Right [Line Items]          
Issuance Date   2016-02      
Expiration Date   2021-02      
Exercise price of warrants (in dollars per share)   $ 15.40      
Number of Shares   8,249