Profit Sharing and Savings Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Profit Sharing and Savings Plan
Defined Benefit Plan Disclosure [Line Items]
Profit Sharing Costs	$ 40,020	$ 56,709	$ 34,132