Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Definite-lived intangible assets	$ 198,800		$ 198,800
Goodwill			251,289
Amortization expense related to intangible assets	$ 11,300	$ 3,900	$ 20,100	$ 7,700