Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2018	Dec. 27, 2017	Dec. 28, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 43,693	$ 39,594	$ 19,402
Other comprehensive (loss) income, net of tax:
Minimum pension liability adjustment, net of tax of $53, $(22) and $2,148	155	(37)	21,819
Recognition of unrealized (loss) gain on hedge transactions, net of tax of $(303), $(559) and $353	(1,985)	(872)	551
Other comprehensive (loss) income	(1,830)	(909)	22,370
Total comprehensive income	$ 41,863	$ 38,685	$ 41,772