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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid- In Capital [Member]
Accumulated Other Comprehensive Loss [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2014 $ 12 $ 1,132 $ 435 $ 78,897   $ 80,476
Balance (in shares) at Dec. 31, 2014 12,365          
Share-based compensation   3,081       3,081
Share-based compensation (in shares) 51          
Options exercised by executives and directors   44       44
Options exercised by executives and directors (in shares) 2          
Net shares repurchased for employee taxes   (1,296)       (1,296)
Net shares repurchased for eimployee taxes, (in shares) (40)          
Share-based compensation tax benefit   247       247
Other comprehensive income (loss)     (497)     (497)
Cash dividends declared to stockholders       (3,013)   (3,013)
Treasury stock purchases         $ (10,516) (10,516)
Treasury stock retirement   (3,208)   (7,308) $ 10,516  
Treasury stock retirement (in shares) (364)          
Net income       20,058   20,058
Balance at Dec. 31, 2015 $ 12   (62) 88,634   88,584
Balance (in shares) at Dec. 31, 2015 12,014          
Share-based compensation   3,428       3,428
Share-based compensation (in shares) 41          
Options exercised by executives and directors   299       299
Options exercised by executives and directors (in shares) 12          
Net shares repurchased for employee taxes   (1,285)   (57)   (1,342)
Net shares repurchased for eimployee taxes, (in shares) (40)          
Share-based compensation tax benefit   230       230
Other comprehensive income (loss)     (103)     (103)
Cash dividends declared to stockholders       (12,915)   (12,915)
Net income       17,835   17,835
Balance at Dec. 31, 2016 $ 12 2,672 (165) 93,497   96,016
Balance (in shares) at Dec. 31, 2016 12,027          
Share-based compensation   4,267       4,267
Share-based compensation (in shares) 95          
Options exercised by executives and directors   568       568
Options exercised by executives and directors (in shares) 25          
Net shares repurchased for employee taxes   (2,540)       (2,540)
Net shares repurchased for eimployee taxes, (in shares) (44)          
Other comprehensive income (loss)     5     5
Cash dividends declared to stockholders       (17,456)   (17,456)
Net income       27,721   27,721
Balance at Dec. 31, 2017 $ 12 $ 4,967 $ (160) $ 103,762   $ 108,581
Balance (in shares) at Dec. 31, 2017 12,103