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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Stockholders' equity:    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred Stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 19,000,000 19,000,000
Common stock, shares issued (in shares) 16,321,116 16,468,369
Treasury stock, at cost (in shares) 0 3,147