Fair Value Measurement, Financial Instruments And Risk Management (Summary of Activity Associated with Cash Flow Hedges Reflected in AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 27, 2016	Dec. 27, 2015
Fair Value Disclosures [Abstract]
Beginning balance, net of tax	$ (125)	$ 0
Changes in fair value gain, net of tax	(310)	(125)
Ending balance, net of tax	$ (435)	$ (125)