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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2015 7,117,000          
Balance at Dec. 31, 2015 $ 115 $ 80,429 $ 5,310 $ (101,779) $ 117,479 $ 101,554
NET INCOME 11,101 11,101
Other comprehensive income, net of tax 2,166 $ 2,166
Exercise of stock options-shares issued including tax benefits (in shares) 8,000         7,917
Exercise of stock options-shares issued including tax benefits 91 $ 91
Restricted stock issued (in shares) 5,000          
Restricted stock issued
Treasury stock repurchases (in shares) (733,000)          
Treasury stock repurchases (21,056) (21,056)
Share-based compensation 302 302
Treasury stock repurchases (in shares) 733,000          
Balance (in shares) at Dec. 31, 2016 6,397,000          
Balance at Dec. 31, 2016 $ 115 80,822 7,476 (122,835) 128,580 94,158
NET INCOME 38,899 38,899
Other comprehensive income, net of tax (32) $ (32)
Exercise of stock options-shares issued including tax benefits (in shares) 11,000         11,063
Exercise of stock options-shares issued including tax benefits 123 $ 123
Restricted stock issued (in shares) 7,000          
Restricted stock issued
Treasury stock repurchases (in shares) 254,000          
Treasury stock repurchases (6,348) (6,348)
Share-based compensation 614 614
Treasury stock repurchases (in shares) (254,000)          
Balance (in shares) at Dec. 31, 2017 6,161,000          
Balance at Dec. 31, 2017 $ 115 81,559 7,444 (129,183) 167,669 127,604
Cumulative effect adjustment – ASU 2016-09 190 190
NET INCOME 23,994 $ 23,994
Exercise of stock options-shares issued including tax benefits (in shares) 45,000         45,005
Exercise of stock options-shares issued including tax benefits $ 1 485 $ 486
Restricted stock issued (in shares) 38,000          
Restricted stock issued
Treasury stock repurchases (in shares) 287,000          
Treasury stock repurchases (13,369) (13,369)
Share-based compensation 732 732
Treasury stock repurchases (in shares) (287,000)          
Cumulative effect adjustment – ASU 2016-01     (7,444)   7,444 (7,444)
Balance (in shares) at Dec. 31, 2018 5,957,000          
Balance at Dec. 31, 2018 $ 116 $ 82,776 $ 0 $ (142,552) $ 199,107 $ 139,447