Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Oct. 31, 2015
Goodwill and Intangible Assets Disclosure [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount					70.00%
Amortization of intangible assets	$ 12,800	$ 11,200	$ 35,964	$ 31,340
Depreciation and amortization			28,360	$ 26,634
Intangible assets, amortization expense
Remaining of 2016	14,000		14,000
2017	40,300		40,300
2018	34,500		34,500
2019	33,000		33,000
2020	$ 32,200		$ 32,200
Banjo trade name
Goodwill and Intangible Assets Disclosure [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount					20.00%
IOP reporting unit
Goodwill and Intangible Assets Disclosure [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount					20.00%