Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income Taxes Receivable	$ 0	$ 28,694
Prepaid expenses	18,376	18,682
Deferred compensation plan assets	17,991	17,320
Deferred income taxes	34,250	22,462
Other	21,034	28,204
Total prepaid and other current assets	$ 91,651	$ 115,362