v3.8.0.1
Consolidated Statement of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive Loss
Total
Balance at Dec. 31, 2014 $ 41 $ 216,818 $ (128,848)   $ 88,011
Balance (in shares) at Dec. 31, 2014 40,735,069        
Increase (Decrease) in Stockholders' Equity          
Exercise of stock options $ 1 5,335     5,336
Exercise of stock options (in shares) 1,141,731        
Issuance of common stock in connection with settlement of restricted stock units, net of withholdings   (436)     (436)
Issuance of common stock in connection with settlement of restricted stock units, net of withholdings (in shares) 248,088        
Issuance of common stock, net of issuance costs $ 4 117,108     117,112
Issuance of common stock, net of issuance costs (in shares) 3,625,000        
Issuance of common stock award   750     750
Issuance of common stock award (in shares) 26,567        
Stock-based compensation expense   11,749     11,749
Net loss     (26,733)   (26,733)
Balance at Dec. 31, 2015 $ 46 351,324 (155,581)   195,789
Balance (in shares) at Dec. 31, 2015 45,776,455        
Increase (Decrease) in Stockholders' Equity          
Exercise of stock options $ 1 4,858     4,859
Exercise of stock options (in shares) 1,011,153        
Issuance of common stock in connection with settlement of restricted stock units, net of withholdings   (382)     (382)
Issuance of common stock in connection with settlement of restricted stock units, net of withholdings (in shares) 351,319        
Issuance of common stock award   (168)     (168)
Issuance of common stock award (in shares) 12,708        
Stock-based compensation expense   15,823     15,823
Net loss     (20,684)   (20,684)
Balance at Dec. 31, 2016         $ 195,237
Balance (in shares) at Dec. 31, 2016         47,151,635
Balance at Dec. 30, 2016 $ 47 371,455 (176,265)   $ 195,237
Balance (in shares) at Dec. 30, 2016 47,151,635        
Increase (Decrease) in Stockholders' Equity          
Cumulative-effect of accounting change (Note 2)   148 (148)    
Balance at Dec. 31, 2016         $ 195,237
Balance (in shares) at Dec. 31, 2016         47,151,635
Increase (Decrease) in Stockholders' Equity          
Net loss         $ (29,423)
Foreign currency translation adjustment         5,326
Balance at Dec. 31, 2017 $ 53 588,289 (205,836) $ 5,326 $ 387,832
Balance (in shares) at Dec. 31, 2017 52,505,856       52,505,856
Balance at Jan. 01, 2017 $ 47 371,603 (176,413)   $ 195,237
Balance (in shares) at Jan. 01, 2017 47,151,635        
Increase (Decrease) in Stockholders' Equity          
Exercise of stock options $ 1 6,614     6,615
Exercise of stock options (in shares) 846,821        
Issuance of common stock in connection with settlement of restricted stock units, net of withholdings $ 1 (1,310)     (1,309)
Issuance of common stock in connection with settlement of restricted stock units, net of withholdings (in shares) 459,900        
Issuance of common stock, net of issuance costs $ 4 189,452     189,456
Issuance of common stock, net of issuance costs (in shares) 4,047,500        
Stock-based compensation expense   21,930     21,930
Net loss     (29,423)   (29,423)
Foreign currency translation adjustment       5,326 5,326
Balance at Dec. 31, 2017 $ 53 $ 588,289 $ (205,836) $ 5,326 $ 387,832
Balance (in shares) at Dec. 31, 2017 52,505,856       52,505,856