Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2019	Jun. 27, 2018	Jun. 26, 2019	Jun. 27, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 34,239	$ 11,626	$ 49,729	$ 21,385
Other comprehensive income (loss), net of tax:
Minimum pension liability adjustment, net of tax of $5, $7, $11 and $13, respectively	16	21	32	43
Changes in the effective portion of the fair value of derivatives, net of tax of $(3,701), $1,117, $(8,323) and $68, respectively	(10,619)	3,201	(22,771)	192
Reclassification of derivatives to interest expense, net of tax of $(3), $58, $(10) and $22, respectively	(11)	168	(28)	64
Other comprehensive (loss) income	(10,614)	3,390	(22,767)	299
Total comprehensive income	$ 23,625	$ 15,016	$ 26,962	$ 21,684