Annual report pursuant to Section 13 and 15(d)

Common Stock and Net Loss Per Share - Narrative (Details)

v3.6.0.2
Common Stock and Net Loss Per Share - Narrative (Details)
12 Months Ended
Dec. 31, 2016
vote
Dec. 09, 2015
$ / shares
Earnings Per Share [Abstract]    
Number of voting rights per share | vote 1  
Debt Instrument [Line Items]    
Debt instrument, conversion price (in dollars per share)   $ 16.42
Convertible debt | 1.75% convertible senior notes due 2020    
Debt Instrument [Line Items]    
Interest rate (percent) 1.75% 1.75%
Debt instrument, conversion price (in dollars per share)   $ 16.42