Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 01, 2023	Oct. 02, 2022
Current assets:
Cash and cash equivalents	$ 168,831	$ 185,094
Accounts receivable, net	974,535	755,112
Contract assets	113,939	92,405
Prepaid expenses and other current assets	89,096	115,400
Income taxes receivable	9,623	10,205
Total current assets	1,356,024	1,158,216
Property and equipment, net	74,832	32,316
Right-of-use assets, operating leases	175,932	182,319
Goodwill	1,880,244	1,110,412
Intangible assets, net	173,936	29,163
Deferred tax assets	89,002	47,804
Other non-current assets	70,507	62,546
Total assets	3,820,477	2,622,776
Current liabilities:
Accounts payable	173,271	147,436
Accrued compensation	302,755	237,669
Contract liabilities	335,044	241,340
Short-term lease liabilities, operating leases	65,005	57,865
Current portion of long-term debt	0	12,504
Current contingent earn-out liabilities	51,108	28,797
Other current liabilities	280,959	190,406
Total current liabilities	1,208,142	916,017
Deferred tax liabilities	14,256	15,161
Long-term debt	879,529	246,250
Long-term lease liabilities, operating leases	144,685	146,285
Non-current contingent earn-out liabilities	22,314	36,769
Other non-current liabilities	148,045	79,157
Commitments and contingencies (Note 17)
Equity:
Preferred stock – Authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at October 1, 2023 and October 2, 2022	0	0
Common stock – Authorized, 150,000 shares of $0.01 par value; issued and outstanding, 53,248 and 52,981 shares at October 1, 2023 and October 2, 2022, respectively	532	530
Additional paid-in capital	0	0
Accumulated other comprehensive loss	(195,295)	(208,144)
Retained earnings	1,598,196	1,390,701
Tetra Tech stockholders' equity	1,403,433	1,183,087
Noncontrolling interests	73	50
Total stockholders' equity	1,403,506	1,183,137
Total liabilities and stockholders' equity	$ 3,820,477	$ 2,622,776