Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Oct. 01, 2023
Current assets:
Cash and cash equivalents	$ 198,689	$ 168,831
Accounts receivable, net	1,040,510	974,535
Contract assets	89,073	113,939
Prepaid expenses and other current assets	125,769	98,719
Total current assets	1,454,041	1,356,024
Property and equipment, net	74,971	74,832
Right-of-use assets, operating leases	179,513	175,932
Goodwill	1,923,146	1,880,244
Intangible assets, net	168,134	173,936
Deferred tax assets	76,210	89,002
Other non-current assets	74,808	70,507
Total assets	3,950,823	3,820,477
Current liabilities:
Accounts payable	207,062	173,271
Accrued compensation	222,686	302,755
Contract liabilities	382,862	335,044
Short-term lease liabilities, operating leases	68,091	65,005
Current contingent earn-out liabilities	37,556	51,108
Other current liabilities	242,738	280,959
Total current liabilities	1,160,995	1,208,142
Deferred tax liabilities	11,620	14,256
Long-term debt	945,319	879,529
Long-term lease liabilities, operating leases	139,537	144,685
Non-current contingent earn-out liabilities	18,048	22,314
Other non-current liabilities	137,617	148,045
Commitments and contingencies (Note 17)
Equity:
Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at December 31, 2023 and October 1, 2023	0	0
Common stock - authorized, 150,000 shares of $0.01 par value; issued and outstanding, 53,466 and 53,248 shares at December 31, 2023 and October 1, 2023, respectively	534	532
Additional paid-in capital	9,979	0
Accumulated other comprehensive loss	(132,202)	(195,295)
Retained earnings	1,659,295	1,598,196
Tetra Tech stockholders’ equity	1,537,606	1,403,433
Noncontrolling interests	81	73
Total stockholders' equity	1,537,687	1,403,506
Total liabilities and stockholders' equity	$ 3,950,823	$ 3,820,477