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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid In Capital [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Loss [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2014 $ 127 $ 100,303 $ (29,971) $ (24,017) $ 152,253 $ 198,695
Balance (Shares) at Dec. 31, 2014 12,731,678   (665,869)      
Net (loss) income         31,805 31,805
Other comprehensive income       2,939   2,939
Stock options exercised   (5,772) $ 10,697     4,925
Stock options exercised, shares     240,410      
Restricted stock awards   (2,955) $ 2,955      
Restricted stock awards, shares     66,017      
Employee stock settlement     $ (1,052)     (1,052)
Employee stock settlement, shares     (35,989)      
Forfeiture of restricted stock awards   145 $ (145)      
Forfeiture of restricted stock awards, shares     (6,735)      
Stock-based compensation recognized   2,183       2,183
Excess tax benefit from stock-based compensation   35       35
Cash dividends         (4,419) (4,419)
Balance at Dec. 31, 2015 $ 127 93,939 $ (17,516) (21,078) 179,639 235,111
Balance (Shares) at Dec. 31, 2015 12,731,678   (402,166)      
Net (loss) income         12,324 12,324
Other comprehensive income       12,915   $ 12,915
Stock options exercised, shares          
Restricted stock awards   (3,431) $ 3,431      
Restricted stock awards, shares     84,353      
Employee stock settlement     $ (78)     $ (78)
Employee stock settlement, shares     (4,343)      
Forfeiture of restricted stock awards   420 $ (420)      
Forfeiture of restricted stock awards, shares     (29,590)      
Stock-based compensation recognized   1,149       1,149
Deficiency of tax benefit from stock-based compensation   (52)       (52)
Cash dividends         (4,455) (4,455)
Balance at Dec. 31, 2016 $ 127 92,025 $ (14,583) (8,163) 187,508 256,914
Balance (Shares) at Dec. 31, 2016 12,731,678   (351,746)      
Cumulative effect of adoption of ASU 2016-09   215     (215)  
Net (loss) income         (22,562) (22,562)
Other comprehensive income       596   $ 596
Stock options exercised, shares          
Restricted stock awards   (2,957) $ 2,957      
Restricted stock awards, shares     72,503      
Employee stock settlement     $ (23)     $ (23)
Employee stock settlement, shares     (1,500)      
Forfeiture of restricted stock awards   906 $ (906)      
Forfeiture of restricted stock awards, shares     (56,239)      
Stock-based compensation recognized   1,162       1,162
Cash dividends         (3,351) (3,351)
Other   (1,004)       (1,004)
Balance at Dec. 31, 2017 $ 127 $ 90,347 $ (12,555) $ (7,567) $ 161,380 $ 231,732
Balance (Shares) at Dec. 31, 2017 12,731,678   (336,982)