Summary of Business Organization, Operations and Significant Accounting Policies (Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (4,429)
Other comprehensive income (loss), net of tax	(23,082)	(7,199)	624
Ending balance	(27,461)	(4,429)
Foreign currency translation adjustments, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,441)
Other comprehensive income (loss), net of tax	(4,462)
Ending balance	(6,903)
Unrealized loss on derivatives, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(274)
Other comprehensive income (loss), net of tax	(16,048)
Ending balance	(16,322)
Pension adjustments, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,714)
Other comprehensive income (loss), net of tax	(2,522)
Ending balance	(4,236)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), net of tax	$ (23,032)	$ (7,099)	$ 740