Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Other Liabilities Disclosure [Abstract]
Deferred compensation	$ 29,526	$ 31,006
Other liabilities	52,787	47,641
Total	$ 82,313	78,647
Deferred compensation plan assets		$ 40,300	$ 34,800