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Consolidated Statement Of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2013 $ 11 $ 83,072 $ 30,773 $ 113,856
Balance, shares at Dec. 31, 2013 10,913      
Issuance of shares of common stock under restricted stock award agreements, Shares 36      
Stock-based compensation   827   827
Excess tax benefit from exercise of stock options   816   816
Shares issued   214   214
Shares issued, shares 61      
Net income     12,243 12,243
Balance at Dec. 31, 2014 $ 11 84,929 43,016 127,956
Balance, shares at Dec. 31, 2014 11,010      
Issuance of shares of common stock under restricted stock award agreements, Shares 57      
Forfeiture of shares of common stock under restricted stock award agreements, shares (3)      
Stock-based compensation   1,573   1,573
Excess tax benefit from exercise of stock options   269   269
Shares issued   305   305
Shares issued, shares 44      
Net income     11,623 11,623
Balance at Dec. 31, 2015 $ 11 87,076 54,639 141,726
Balance, shares at Dec. 31, 2015 11,108      
Issuance of shares of common stock under restricted stock award agreements $ 0 0   0
Issuance of shares of common stock under restricted stock award agreements, Shares 108      
Forfeiture of shares of common stock under restricted stock award agreements $ 0 0   0
Forfeiture of shares of common stock under restricted stock award agreements, shares (69)      
Stock-based compensation   1,072   1,072
Excess tax benefit from exercise of stock options   1,090   1,090
Shares issued $ 1 3,015   3,016
Shares issued, shares 380      
Net income     12,024 12,024
Balance at Dec. 31, 2016 $ 12 $ 92,253 $ 66,663 $ 158,928
Balance, shares at Dec. 31, 2016 11,527