Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Sep. 30, 2018
Current assets:
Cash and cash equivalents	$ 111,231	$ 146,185
Accounts receivable – net	728,999	694,221
Contract assets	145,672	142,882
Prepaid expenses and other current assets	123,816	56,003
Income taxes receivable	6,756	11,089
Total current assets	1,116,474	1,050,380
Property and equipment – net	40,072	43,278
Investments in unconsolidated joint ventures	7,655	3,370
Goodwill	851,621	798,820
Intangible assets – net	10,438	16,123
Deferred tax assets	30,572	8,607
Other long-term assets	39,591	38,843
Total assets	2,096,423	1,959,421
Current liabilities:
Accounts payable	179,197	160,222
Accrued compensation	160,777	180,153
Contract liabilities	147,549	143,270
Income taxes payable	56	8,272
Current portion of long-term debt	12,526	12,599
Current contingent earn-out liabilities	21,479	13,633
Other current liabilities	125,313	99,944
Total current liabilities	646,897	618,093
Deferred tax liabilities	24,890	30,166
Long-term debt	324,074	264,712
Long-term contingent earn-out liabilities	30,844	21,657
Other long-term liabilities	53,925	57,693
Commitments and contingencies (Note 16)
Equity:
Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at June 30, 2019 and September 30, 2018	0	0
Common stock - authorized, 150,000 shares of $0.01 par value; issued and outstanding, 54,714 and 55,349 shares at June 30, 2019 and September 30, 2018, respectively	547	553
Additional paid-in capital	94,292	148,803
Accumulated other comprehensive loss	(147,078)	(127,350)
Retained earnings	1,067,851	944,965
Tetra Tech stockholders’ equity	1,015,612	966,971
Noncontrolling interests	181	129
Total stockholders' equity	1,015,793	967,100
Total liabilities and stockholders' equity	$ 2,096,423	$ 1,959,421