Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Current assets:
Cash and cash equivalents	$ 130,728	$ 146,185
Accounts receivable – net	629,597	694,221
Contract assets	157,918	142,882
Prepaid expenses and other current assets	71,999	56,003
Income taxes receivable	8,178	11,089
Total current assets	998,420	1,050,380
Property and equipment – net	41,660	43,278
Investments in unconsolidated joint ventures	3,536	3,370
Goodwill	827,676	798,820
Intangible assets – net	11,698	16,123
Deferred tax assets	30,581	8,607
Other long-term assets	38,294	38,843
Total assets	1,951,865	1,959,421
Current liabilities:
Accounts payable	135,393	160,222
Accrued compensation	156,079	180,153
Contract liabilities	154,609	143,270
Income taxes payable	1,877	8,272
Promissory note	24,688	0
Current portion of long-term debt	12,551	12,599
Current contingent earn-out liabilities	20,026	13,633
Other current liabilities	119,219	99,944
Total current liabilities	624,442	618,093
Deferred tax liabilities	25,622	30,166
Long-term debt	231,332	264,712
Long-term contingent earn-out liabilities	25,869	21,657
Other long-term liabilities	53,995	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 March 31, 2019 and September 30, 2018	0	0
Common stock - authorized, 150,000 shares of $0.01 par value; issued and outstanding, 54,947 and 55,349 shares at March 31, 2019 and September 30, 2018, respectively	549	553
Additional paid-in capital	111,277	148,803
Accumulated other comprehensive loss	(148,217)	(127,350)
Retained earnings	1,026,836	944,965
Tetra Tech stockholders’ equity	990,445	966,971
Noncontrolling interests	160	129
Total stockholders' equity	990,605	967,100
Total liabilities and stockholders' equity	$ 1,951,865	$ 1,959,421