Schedule II - Valuation And Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of Year	$ 877	$ 1,150	$ 1,072
Additions Charged to Expense	821	313	708
Additions Charged to Other Accounts	0	0	0
Write Offs	(440)	(586)	(630)
Deductions Credited to Other Accounts	0	0	0
Balance at end of Year	1,258	877	1,150
Deferred tax valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of Year	12,393	14,576	356
Additions Charged to Expense	95	1,917	14,220
Additions Charged to Other Accounts	2,589	0	0
Write Offs	(11,782)	(4,100)	0
Deductions Credited to Other Accounts	0	0	0
Balance at end of Year	$ 3,295	$ 12,393	$ 14,576