Goodwill and Identifiable Assets (Future Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 10,032	$ 6,957	$ 20,176	$ 11,826
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2016	19,472		19,472
2017	33,029		33,029
2018	28,905		28,905
2019	21,998		21,998
2020	14,500		14,500
Thereafter	34,195		34,195
Net Carrying Amount	$ 152,099		$ 152,099		$ 172,295