Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income taxes receivable	$ 7,908	$ 28,694
Prepaid expenses	18,900	18,682
Deferred compensation plan assets	16,623	17,320
Other	32,340	28,204
Total prepaid and other current assets	$ 75,771	$ 92,900