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Consolidated Statements of Shareholders' Equity (USD $)
In Thousands
Total
Common Stock
Retained Earnings
Beginning balance at Dec. 31, 2008   $ 119,134 $ 203,824
Net income (loss) (61,228)   (61,228)
Payment of dividends     (1,196)
Exercise of stock options and employee stock purchases (22, 16 and 6 shares in 2009, 2010 and 2011 respectively)   217  
Stock-based compensation   (1,139)  
Ending balance at Dec. 31, 2009   118,212 141,400
Net income (loss) 2,132   2,132
Payment of dividends     (870)
Exercise of stock options and employee stock purchases (22, 16 and 6 shares in 2009, 2010 and 2011 respectively)   137  
Stock-based compensation   627  
Ending balance at Dec. 31, 2010   118,976 142,662
Net income (loss) 24,970   24,970
Payment of dividends     (872)
Exercise of stock options and employee stock purchases (22, 16 and 6 shares in 2009, 2010 and 2011 respectively)   34  
Stock-based compensation   806  
Ending balance at Dec. 31, 2011   $ 119,816 $ 166,760