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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2018 - 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 (Scenario, Previously Reported [Member]) at Dec. 31, 2017 $ 12 $ 4,967 $ (160) $ 101,744   $ 106,563
Balance (Restatement Adjustment [Member])       (2,018)   (2,018)
Balance at Dec. 31, 2017 $ 12 4,967 (160) 103,762   108,581
Balance (in shares) (Scenario, Previously Reported [Member]) at Dec. 31, 2017 12,103          
Balance (in shares) at Dec. 31, 2017 12,103          
Net income       40,136   40,136
Share-based compensation   2,352       2,352
Share-based compensation (in shares) 16          
Options exercised by executives and directors   220       220
Options exercised by executives and directors (in shares) 20          
Net shares repurchased for employee taxes   (249)       (249)
Net shares repurchased for eimployee taxes, (in shares) (3)          
Treasury stock from cashless options $ 9 750     $ (750)  
Treasury stock from stock repurchases         (19,996) (19,996)
Other comprehensive income (loss)     (106)     (106)
Cash dividends declared to stockholders       (17,279)   (17,279)
Balance at Sep. 30, 2018 $ 12 $ 8,040 $ (266) $ 124,601 $ (20,746) $ 111,641
Balance (in shares) at Sep. 30, 2018 12,145