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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 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 $ 10,890 $ 9,930  
Intangible assets, amortization expense      
Remaining of 2016 34,500    
2017 37,400    
2018 27,200    
2019 24,400    
2020 $ 23,500    
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%