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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Retained Earnings [Member]
--- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2010 | $ 95,365 | $ 102 | $ 25,164 | $ (65) | $ 70,164
Beginning balance, shares at Dec. 31, 2010 |  | 10,202,000 |  |  |
Common stock issued on exercise of options | 54 | 0 | 54 | 0 | 0
Common stock issued on exercise of options, shares | 7,475 | 8,000 |  |  |
Share based compensation expense, net of tax | 473 | 0 | 473 | 0 | 0
Share based compensation expense, net of tax, shares |  | 0 |  |  |
Excess tax benefit of stock option exercises | 27 | 0 | 27 | 0 | 0
Company repurchase of common stock | (4,778) | (3) | (4,775) | 0 | 0
Company repurchase of common stock, shares | (339,384) | (339,000) |  |  |
Cash dividends on common stock | (3,835) | 0 | 0 | 0 | (3,835)
Unrealized holding gains (losses) on marketable securities, net of tax | 31 | 0 | 0 | 31 | 0
Net income | 14,318 | 0 | 0 | 0 | 14,318
Ending balance at Dec. 31, 2011 | 101,655 | 99 | 20,943 | (34) | 80,647
Ending balance, shares at Dec. 31, 2011 |  | 9,871,000 |  |  |
Common stock issued on exercise of options | 1,845 | 1 | 1,844 | 0 | 0
Common stock issued on exercise of options, shares | 131,997 | 132,000 |  |  |
Share based compensation expense, net of tax | 695 | 0 | 695 | 0 | 0
Share based compensation expense, net of tax, shares |  | 0 |  |  |
Excess tax benefit of stock option exercises | 295 | 0 | 295 | 0 | 0
Company repurchase of common stock | (60,232) | (30) | (22,864) | 0 | (37,338)
Company repurchase of common stock, shares | 0 | (2,986,000) |  |  |
Cash dividends on common stock | (3,550) | 0 | 0 | 0 | (3,550)
Unrealized holding gains (losses) on marketable securities, net of tax | 57 | 0 | 0 | 57 | 0
Net income | 13,131 | 0 | 0 | 0 | 13,131
Ending balance at Dec. 31, 2012 | 53,896 | 70 | 913 | 23 | 52,890
Ending balance, shares at Dec. 31, 2012 |  | 7,017,000 |  |  |
Common stock issued on exercise of options and vesting of restricted stock units | 1,771 | 2 | 1,769 | 0 | 0
Common stock issued on exercise of options and vesting of restricted stock units, shares |  | 148,000 |  |  |
Common stock issued on exercise of options, shares | 138,298 |  |  |  |
Share based compensation expense, net of tax | 1,016 | 0 | 1,016 | 0 | 0
Share based compensation expense, net of tax, shares |  | 0 |  |  |
Excess tax benefit of stock option exercises | 2,083 | 0 | 2,083 | 0 | 0
Company repurchase of common stock, shares | 0 |  |  |  |
Cash dividends on common stock | (4,056) | 0 | 0 | 0 | (4,056)
Unrealized holding gains (losses) on marketable securities, net of tax | (49) | 0 | 0 | (49) | 0
Net income | 17,892 | 0 | 0 | 0 | 17,892
Ending balance at Dec. 31, 2013 | $ 72,553 | $ 72 | $ 5,781 | $ (26) | $ 66,726
Ending balance, shares at Dec. 31, 2013 |  | 7,165,000 |  |  |

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