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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 Other Comprehensive Income (Loss) [Member]
Retained Earnings [Member]
Beginning balance at Dec. 31, 2013 $ 72,553 $ 72 $ 5,781 $ (26) $ 66,726
Beginning balance, shares at Dec. 31, 2013   7,165      
Common stock issued on exercise of options 213 $ 0 213 0 0
Common stock issued on exercise of options, shares   17      
Share based compensation expense, net of tax 671 $ 0 671 0 0
Share based compensation expense, net of tax, shares   0      
Excess tax benefits from share-based compensation 124 $ 0 124 0 0
Company repurchase of common stock (991) $ 0 (991) 0 0
Company repurchase of common stock, shares   (20)      
Cash dividends on common stock (2,582) $ 0 0 0 (2,582)
Unrealized holding gains (losses) on marketable securities, net of tax (24) 0 0 (24) 0
Net income 3,700 0 0 0 3,700
Ending balance at Jun. 30, 2014 73,664 $ 72 5,798 (50) 67,844
Ending balance, shares at Jun. 30, 2014   7,162      
Beginning balance at Dec. 31, 2014 38,658 $ 71 4,410 (23) 34,200
Beginning balance, shares at Dec. 31, 2014   7,126      
Common stock issued on exercise of options and vesting of restricted stock units 690 $ 1 689 0 0
Common stock issued on exercise of options and vesting of restricted stock units, shares   50      
Common stock repurchased on vesting of restricted stock units (65) $ 0 (65) 0 0
Common stock repurchased on vesting of restricted stock units, shares   (1)      
Share based compensation expense, net of tax 1,069 $ 0 1,069 0 0
Share based compensation expense, net of tax, shares   0      
Excess tax benefits from share-based compensation 70 $ 0 70 0 0
Cash dividends on common stock (3,142) 0 0 0 (3,142)
Unrealized holding gains (losses) on marketable securities, net of tax 27 0 0 27 0
Net income 2,944 0 0 0 2,944
Ending balance at Jun. 30, 2015 $ 40,251 $ 72 $ 6,173 $ 4 $ 34,002
Ending balance, shares at Jun. 30, 2015   7,175