Goodwill and Intangible Assets (Detail Textuals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Intangible Assets [Line Items]
Goodwill	$ 1,388,931	$ 1,388,931
Indefinite-Lived Intangible Assets	4,427	4,427
Tradenames
Schedule Of Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 1,400,000	$ 800,000