Goodwill and Identifiable Assets (Future Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 6,957	$ 5,522	$ 11,826	$ 11,060
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2014	22,740		22,740
2015	39,690		39,690
2016	33,058		33,058
2017	28,930		28,930
2018	22,031		22,031
Thereafter	48,772		48,772
Net Carrying Amount	$ 195,221		$ 195,221		$ 72,284