Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements ??? Adoption of ASU 2017-11 (Details)

v3.7.0.1
Fair Value Measurements – Adoption of ASU 2017-11 (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Additional Paid-in Capital $ 874,697 $ 877,364
Accumulated deficit (852,199) $ (856,291)
ASU 2017-11 | Prior to adoption    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Warrant Liability 2,917  
Additional Paid-in Capital 870,457  
Accumulated deficit (850,876)  
ASU 2017-11 | Reclassified warrant liability    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Warrant Liability (4,240)  
Additional Paid-in Capital 4,240  
ASU 2017-11 | Reclassified unrealized gain on warrant liability    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Warrant Liability 1,323  
Accumulated deficit (1,323)  
Change in fair value of warrant liability $ 500