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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Consolidated Balance Sheets    
Preferred stock, par value (in dollars per share) $ 1.00us-gaap_PreferredStockParOrStatedValuePerShare $ 1.00us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 100us-gaap_PreferredStockSharesAuthorized 100us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Common stock, par value (in dollars per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 100,000us-gaap_CommonStockSharesAuthorized 100,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 72,082us-gaap_CommonStockSharesIssued 71,883us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 72,082us-gaap_CommonStockSharesOutstanding 71,883us-gaap_CommonStockSharesOutstanding