Derivative - Changes in AOCL, net of tax (Details) $ in Thousands	12 Months Ended
	Dec. 29, 2020 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 571,742
Amounts reclassified from AOCL	1,100
Ending balance	288,693
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(435)
Ending balance	(3,785)
Interest rate swap agreement | Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	0
Other comprehensive loss before reclassifications	(4,612)
Amounts reclassified from AOCL	1,148
Other comprehensive loss, net of tax	(3,464)
Ending balance	$ (3,464)