Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income Taxes Receivable	$ 8,352	$ 7,908
Prepaid expenses	21,721	18,900
Deferred compensation plan assets	23,777	16,623
Other	10,604	32,340
Total prepaid and other current assets	$ 64,454	$ 75,771