Other Intangible Assets (Schedule of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	$ 81,514	$ 80,377
Finite-lived intangible assets, accumulated amortization	19,616	14,484
Total other intangible assets	93,144	92,007
Other intangible assets, net	73,528	77,523
Acquired Intangible Assets [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	79,859	78,985
Finite-lived intangible assets, accumulated amortization	19,104	14,315
Patents [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	20,061	18,996
Finite-lived intangible assets, accumulated amortization	4,569	3,244
Customer Lists [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	52,607	52,607
Finite-lived intangible assets, accumulated amortization	11,829	9,018
Trademarks and brand names [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	7,191	7,191
Finite-lived intangible assets, accumulated amortization	2,706	2,053
Other [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	0	191
Finite-lived intangible assets, accumulated amortization	0	0
Deferred Financing Costs [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, cost	1,655	1,392
Finite-lived intangible assets, accumulated amortization	512	169
Trademarks and brand names [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 11,630	$ 11,630