SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for Deferred Tax Assets [Member] - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 165,210,000	$ 143,609,000	$ 123,466,000
Additions Charged to Costs and Expenses	0	0	0
Additions Charged to Other Accounts	(60,151,000)	21,601,000	20,143,000
Deductions	0	0	0
Balance at End of Year	$ 105,059,000	$ 165,210,000	$ 143,609,000