CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Income Statement [Abstract]
Revenue	$ 471,945	$ 442,955	$ 938,358	$ 893,489
Cost of revenue, excluding depreciation and amortization	316,690	297,912	638,638	603,620
Branch and regional administrative expenses	91,255	88,998	182,963	177,741
Corporate expenses	26,354	36,202	57,289	72,769
Goodwill impairment		470,207		470,207
Depreciation and amortization	3,491	6,038	7,532	11,857
Acquisition-related costs	(32)	(22)	38	69
Other operating (income) expense	(3,305)	1	(3,233)	(169)
Operating income (loss)	37,492	(456,381)	55,131	(442,605)
Interest income	113	143	188	205
Interest expense	(37,985)	(22,919)	(73,943)	(45,283)
Other income	25,169	4,926	12,981	41,383
Income (loss) before income taxes	24,789	(474,231)	(5,643)	(446,300)
Income tax benefit (expense)	810	344	(756)	(2,253)
Net income (loss)	$ 25,599	$ (473,887)	$ (6,399)	$ (448,553)
Net income (loss) per share:
Net income (loss) per share, basic	$ 0.14	$ (2.56)	$ (0.03)	$ (2.43)
Weighted average shares of common stock outstanding, basic	189,071	184,953	189,063	184,940
Net income (loss) per share, diluted	$ 0.13	$ (2.56)	$ (0.03)	$ (2.43)
Weighted average shares of common stock outstanding, diluted	189,739	184,953	189,063	184,940