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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (Allowance for Deferred Tax Assets [Member], USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Allowance for Deferred Tax Assets [Member]
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| 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 |