Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accumulated amortization of deferred credit $ 16,253 $ 13,123
Stockholders' equity:    
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 2,500 2,500
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 60,000 60,000
Common stock, shares outstanding 39,472 39,398