Statement of Accounting Policies (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2014
Accumlated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (11,688,000)
Total other comprehensive income (loss)	(23,010,000)	54,000
Ending balance	(34,698,000)
Foreign Currency
Accumlated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(9,825,000)	3,493,000
Other comprehensive income before reclassifications	(12,519,000)	54,000
Amounts reclassified from accumulated other comprehensive income	(10,491,000)
Total other comprehensive income (loss)	(23,010,000)	54,000
Ending balance	(32,835,000)	3,547,000
Defined Benefit Pension Plans
Accumlated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,863,000)	(1,066,000)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	0
Total other comprehensive income (loss)	0	0
Ending balance	(1,863,000)	(1,066,000)
Accumulative Other Comprehensive Loss
Accumlated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(11,688,000)	2,427,000
Other comprehensive income before reclassifications	(12,519,000)	54,000
Amounts reclassified from accumulated other comprehensive income	(10,491,000)
Total other comprehensive income (loss)	(23,010,000)	54,000
Ending balance	(34,698,000)	2,481,000
Carrying (Reported) Amount, Fair Value Disclosure | Less unamortized deferred financing fees
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Notes Payable, Fair Value Disclosure	100,000,000		100,000,000
Estimate of Fair Value, Fair Value Disclosure | Less unamortized deferred financing fees
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Notes Payable, Fair Value Disclosure	$ 108,700,000			$ 106,800,000