Interest Rate Swap (Details) - USD ($) $ in Thousands				3 Months Ended			6 Months Ended
	Feb. 19, 2021	Jun. 25, 2016	Mar. 31, 2016	Jun. 25, 2016	Dec. 26, 2015	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015	Mar. 26, 2016	Sep. 26, 2015	Mar. 28, 2015
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		$ 2,500		$ 2,500			$ 2,500
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion				2,234		$ 0	2,234	$ 0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax				(872)		0	(872)	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				0		0	0	0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred		1,200
Fair Value, Option, Changes in Fair Value, Gain (Loss)				(1,362)	$ 0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				0	0	0
Derivative Instruments, Loss Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing				306		0	306	0
Other Short-term Borrowings		2,540		2,540	0	0	2,540	0
Interest Rate Swap Inception Date			Mar. 31, 2016
Derivative, Notional Amount		197,500	$ 197,500	197,500			197,500
Other Comprehensive Income (Loss), Net of Tax				(1,362)	0	0	(1,362)	0
Accumulated Other Comprehensive Income (Loss), Net of Tax		(1,362)		(1,362)	0	0	(1,362)	0
Interest Rate Swap Long Term Portion [Member]
Derivative [Line Items]
Other Short-term Borrowings		1,303		1,303	0	0	1,303	0
Interest Rate Swap Short Term Portion [Member]
Derivative [Line Items]
Other Short-term Borrowings		$ 1,237		$ 1,237	$ 0	$ 0	$ 1,237	$ 0
Beginning Balance [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax									$ 0	$ 0	$ 0
Subsequent Event [Member]
Derivative [Line Items]
Interest Rate Swap Maturity Date	Feb. 19, 2021