Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 25, 2020	Mar. 27, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 9,013	$ 15,490
Other comprehensive income (loss), net of tax:
Minimum pension liability adjustment, net of tax of $6 and $6, respectively	17	16
Changes in the fair value of derivatives, net of tax of $(11,795) and $(4,622), respectively	(32,928)	(12,152)
Reclassification of derivatives to interest expense, net of tax of $86 and $(7), respectively	239	(17)
Other comprehensive loss	(32,672)	(12,153)
Total comprehensive income (loss)	$ (23,659)	$ 3,337