Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Cash Paid For An Intangible Asset	$ 11,000	$ 10,900	$ 31,300
Goodwill, Impairment Loss	$ 0	$ 0	$ 24,723