Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2019	Sep. 26, 2018	Sep. 25, 2019	Sep. 26, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 49,122	$ 10,805	$ 98,851	$ 32,190
Other comprehensive income (loss), net of tax:
Minimum pension liability adjustment, net of tax of $6, $7, $17 and $20, respectively	16	21	48	64
Changes in the effective portion of the fair value of derivatives, net of tax of $(5,251), $1,543, $(13,574) and $1,611, respectively	(15,067)	4,422	(37,838)	4,614
Reclassification of derivatives to interest expense, net of tax of $21, $40, $11 and $62, respectively	57	115	29	179
Other comprehensive (loss) income	(14,994)	4,558	(37,761)	4,857
Total comprehensive income	$ 34,128	$ 15,363	$ 61,090	$ 37,047