SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (Allowance for Deferred Tax Assets [Member], USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Allowance for Deferred Tax Assets [Member]
     
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year $ 100,026,000 $ 85,420,000 $ 71,351,000
Additions Charged to Costs and Expense 0 0 0
Additions Charged to Other Accounts 23,440,000 14,606,000 14,069,000
Deductions 0 0 0
Balance at End of Year $ 123,466,000 $ 100,026,000 $ 85,420,000