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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Retained Earnings (Deficit)
Accumulated Other Comprehensive (Loss) Income
Total
Balance at beginning of period at Dec. 31, 2014 $ 142 $ 99,084 $ 95,336 $ (344) $ 194,218
Balance at beginning of period (in shares) at Dec. 31, 2014 14,216,540        
Increase (Decrease) in Stockholders' Equity          
Net loss     (26,279)   (26,279)
Unrealized gain (loss) on foreign exchange rate translation       (2,106)  
Income tax benefit (expense)       626  
Other comprehensive gain (loss)       (1,480) (1,480)
Stock consideration issued in merger $ 74 42,828     42,902
Stock consideration issued in merger (in shares) 7,381,476        
Issuance of common stock under stock compensation plans (in shares) 14,212        
Tax deficit recorded to hypothetical apic pool   (551)     (551)
Stock-based compensation expense   890     890
Issuance of common stock as compensation   266     266
Issuance of common stock as compensation (in shares) 58,937        
Shares exchanged for taxes on stock-based compensation   (248)     (248)
Shares exchanged for taxes on stock-based compensation (in shares) (41,855)        
Balance at end of period at Dec. 31, 2015 $ 216 142,269 69,057 (1,824) 209,718
Balance at end of period (in shares) at Dec. 31, 2015 21,629,310        
Increase (Decrease) in Stockholders' Equity          
Net loss     (39,792)   (39,792)
Unrealized gain (loss) on foreign exchange rate translation       496  
Income tax benefit (expense)       (268)  
Other comprehensive gain (loss)       228 228
Issuance of common stock under stock compensation plans (in shares) 20,221        
Tax deficit recorded to hypothetical apic pool   (77)     (77)
Stock-based compensation expense   462     462
Issuance of common stock as compensation $ 1 416     417
Issuance of common stock as compensation (in shares) 66,200        
Shares exchanged for taxes on stock-based compensation   (72)     (72)
Shares exchanged for taxes on stock-based compensation (in shares) (10,880)        
Balance at end of period at Dec. 31, 2016 $ 217 142,998 29,265 (1,596) $ 170,884
Balance at end of period (in shares) at Dec. 31, 2016 21,704,851       21,656,406
Increase (Decrease) in Stockholders' Equity          
Impact of adopting ASU 2016-09   20 (20)    
Net loss     (31,266)   $ (31,266)
Unrealized gain (loss) on foreign exchange rate translation       1,091  
Income tax benefit (expense)       (275)  
Other comprehensive gain (loss)       816 816
Issuance of common stock under stock compensation plans $ 1 (1)      
Issuance of common stock under stock compensation plans (in shares) 92,448        
Stock-based compensation expense   656     656
Issuance of common stock as compensation   320     320
Issuance of common stock as compensation (in shares) 67,498        
Shares exchanged for taxes on stock-based compensation   (158)     (158)
Shares exchanged for taxes on stock-based compensation (in shares) (28,180)        
Balance at end of period at Dec. 31, 2017 $ 218 $ 143,835 $ (2,021) $ (780) $ 141,252
Balance at end of period (in shares) at Dec. 31, 2017 21,836,617       21,788,172