CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2022	Jul. 02, 2022	Dec. 30, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue			$ 1,895,209	$ 1,787,645
Cost of revenue, excluding depreciation and amortization			1,299,777	1,234,418
Branch and regional administrative expenses			360,978	357,230
Corporate expenses			113,034	137,864
Goodwill impairment	$ 205,100	$ 470,200	105,136	675,346
Depreciation and amortization			13,778	21,313
Acquisition-related costs			466	99
Other operating (income) expense			(6,032)	3,651
Operating income (loss)			8,072	(642,276)
Interest income			327	679
Interest expense			(153,246)	(107,720)
Other income			5,851	85,503
Loss before income taxes			(138,996)	(663,814)
Income tax benefit			4,472	1,780
Net loss			$ (134,524)	$ (662,034)
Net loss per share:
Net loss per share, basic			$ (0.71)	$ (3.57)
Net loss per share, diluted			$ (0.71)	$ (3.57)
Weighted average shares of common stock outstanding, basic			189,956	185,553
Weighted average shares of common stock outstanding, diluted			189,956	185,553