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Consolidated Statements of Shareholders' Equity (USD $)
In Thousands
Common Stock [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Balance at Dec. 31, 2010 $ 118,976 $ 142,662   $ 261,638
Net income   24,970   24,970
Payment of dividends   (872)   (872)
Exercise of stock options and employee stock purchases 34     34
Stock-based compensation 806     806
Balance at Dec. 31, 2011 119,816 166,760   286,576
Net income   2,277   2,277
Payment of dividends   (873)   (873)
Exercise of stock options and employee stock purchases 114     114
Stock-based compensation 2,342     2,342
Change in fair value of interest rate hedge     (579) (579)
Balance at Dec. 31, 2012 122,272 168,164 (579) 289,857
Net income   7,647   7,647
Payment of dividends   (876)   (876)
Exercise of stock options and employee stock purchases 122     122
Stock-based compensation 1,724     1,724
Change in fair value of interest rate hedge     142 142
Balance at Dec. 31, 2013 $ 124,118 $ 174,935 $ (437) $ 298,616