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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Income [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2012 $ 156,320 $ 39 $ 74,965 $ 81,256 $ 60
Beginning Balance, Shares at Dec. 31, 2012   39,205      
Net income 11,147 $ 0 0 11,147 0
Foreign currency translation adjustment 1,903 0 0 (3) 1,906
Exercise of stock options 114 $ 0 114 0 0
Exercise of stock options, Shares   163      
Restricted stock awards 2,473 $ 1 2,472 0 0
Restricted stock awards, Shares   251      
Tax payments for stock issuances (998) $ 0 (998) 0 0
Tax benefits of stock based compensation 3,318 0 3,318 0 0
Ending Balance at Dec. 31, 2013 174,278 $ 40 79,871 92,401 1,966
Ending Balance, Shares at Dec. 31, 2013   39,619      
Net income 33,484 $ 0 0 33,484 0
Foreign currency translation adjustment (4,468) 0 0 0 (4,468)
Exercise of stock options 51 $ 0 51 0 0
Exercise of stock options, Shares   20      
Restricted stock awards 2,399 $ 0 2,399 0 0
Restricted stock awards, Shares   21      
Tax payments for stock issuances (123) $ 0 (123) 0 0
Tax benefits of stock based compensation 253 0 253 0 0
Ending Balance at Dec. 31, 2014 205,873 $ 40 82,450 125,885 (2,502)
Ending Balance, Shares at Dec. 31, 2014   39,660      
Net income 42,151 $ 0 0 42,151 0
Foreign currency translation adjustment (3,292) 0 0 0 (3,292)
Restricted stock awards 3,835 $ 0 3,835 0 0
Restricted stock awards, Shares   448      
Tax payments for stock issuances (837) $ 0 (837) 0 0
Tax benefits of stock based compensation 318 0 318 0 0
Ending Balance at Dec. 31, 2015 $ 248,048 $ 40 $ 85,766 $ 168,036 $ (5,794)
Ending Balance, Shares at Dec. 31, 2015   40,108