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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, 2015 $ 227 $ 150,456 $ 60,859 $ (1,824) $ 209,718
Balance at beginning of period (in shares) at Dec. 31, 2015 22,719,498        
Increase (Decrease) in Stockholders' Equity          
Impact of adopting ASUs     (869)   (869)
Net loss     (38,333)   (38,333)
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 $ 228 151,185 21,657 (1,596) 171,474
Balance at end of period (in shares) at Dec. 31, 2016 22,795,039        
Increase (Decrease) in Stockholders' Equity          
Impact of adopting ASUs   20 (20)    
Net loss     (31,790)   (31,790)
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 $ 229 152,022 (10,153) (780) $ 141,318
Balance at end of period (in shares) at Dec. 31, 2017 22,926,805       22,878,360
Increase (Decrease) in Stockholders' Equity          
Impact of adopting ASUs     43 (43)  
Cash in lieu of fractional shares for stock dividend     (1)   $ (1)
Cash in lieu of fractional shares for stock dividend (in shares) (101)        
Net loss     (24,407)   (24,407)
Unrealized gain (loss) on foreign exchange rate translation       (1,141)  
Other comprehensive gain (loss)       (1,141) (1,141)
Issuance of common stock under stock compensation plans $ 1 (1)      
Issuance of common stock under stock compensation plans (in shares) 51,384        
Stock-based compensation expense   1,037     1,037
Issuance of common stock as compensation   331     331
Issuance of common stock as compensation (in shares) 59,284        
Shares exchanged for taxes on stock-based compensation   (121)     (121)
Shares exchanged for taxes on stock-based compensation (in shares) (18,931)        
Balance at end of period at Dec. 31, 2018 $ 230 $ 153,268 $ (34,518) $ (1,964) $ 117,016
Balance at end of period (in shares) at Dec. 31, 2018 23,018,441       22,969,996