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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
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, Authorized shares Series A Junior Participating Preferred 10,000us-gaap_PreferredStockSharesAuthorized 10,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, outstanding shares Series A Junior Participating Preferred 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in dollars per share) $ 1.00us-gaap_CommonStockParOrStatedValuePerShare $ 1.00us-gaap_CommonStockParOrStatedValuePerShare
Common stock, Authorized shares 199,990,000us-gaap_CommonStockSharesAuthorized 199,990,000us-gaap_CommonStockSharesAuthorized
Common stock, Issued shares 46,296,045us-gaap_CommonStockSharesIssued 46,234,809us-gaap_CommonStockSharesIssued