CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 29, 2022
Cash flows from operating activities:
Net Income	$ 218,923	$ 142,213	$ 48,574
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	163,092	144,181	152,652
Non-cash lease expense	35,181	32,069	31,838
Non-cash lease expense	(10,643)	4,532	8,024
Stock-based compensation	25,457	17,927	9,866
Provision for bad debt, net	274	2,600	2,911
Gain on sale of fixed assets	(28,348)	(16,759)	(4,203)
Loss on debt extinguishment	0	0	62
Amortization of debt discount	0	0	1,665
Amortization of debt issuance costs and other	2,984	2,835	2,825
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable, net	(142,383)	(173,714)	(40,687)
Contract assets, net	23,034	(18,394)	176,982
Other current assets and inventories	3,085	(41,270)	(12,255)
Other assets	408	5,666	2,220
Income taxes receivable/payable	(14,205)	23,463	(17,177)
Accounts payable	6,989	49,396	(4,905)
Accrued liabilities, insurance claims, operating lease liabilities, and other liabilities	(24,872)	(9,956)	(49,737)
Net cash provided by operating activities	258,976	164,789	308,655
Cash flows from investing activities:
Capital expenditures	(218,492)	(200,955)	(157,042)
Proceeds from sale of assets	35,231	17,372	5,363
Cash paid for acquisitions, net of cash acquired	(122,902)	(350)	0
Net cash used in investing activities	(306,163)	(183,933)	(151,679)
Cash flows from financing activities:
Proceeds from 2029 Notes	0	0	500,000
Proceeds from borrowings on senior credit agreement, including term loans	763,000	0	95,000
Principal payments on senior credit agreement, including term loans	(780,500)	(17,500)	(271,875)
Debt issuance costs	0	0	(11,646)
Repurchase of common stock	(49,659)	(48,732)	(106,133)
Extinguishment of 2021 Convertible Notes	0	0	(58,264)
Purchase of warrants	0	0	(693)
Exercise of stock options	1,149	4,557	2,261
Restricted stock tax withholdings	(9,903)	(5,752)	(6,639)
Net cash provided by (used in) financing activities	(75,913)	(67,427)	142,011
Net (decrease) increase in cash, cash equivalents and restricted cash	(123,100)	(86,571)	298,987
Cash, cash equivalents and restricted cash at beginning of period (Note 8)	225,990	312,561	13,574
Cash, cash equivalents and restricted cash at end of period (Note 8)	102,890	225,990	312,561
Supplemental disclosure of other cash flow activities and non-cash investing and financing activities:
Cash paid for interest	50,679	37,928	22,076
Cash paid for taxes, net	96,616	6,915	8,601
Purchases of capital assets included in accounts payable or other accrued liabilities at period end	$ 7,338	$ 8,256	$ 6,666