Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2018	Oct. 01, 2017
Current assets:
Cash and cash equivalents	$ 203,177	$ 189,975
Accounts receivable – net	863,219	788,767
Prepaid expenses and other current assets	65,102	49,969
Income taxes receivable	18,406	13,312
Total current assets	1,149,904	1,042,023
Property and equipment – net	55,495	56,835
Investments in unconsolidated joint ventures	3,167	2,700
Goodwill	809,690	740,886
Intangible assets – net	20,847	26,688
Deferred tax assets	8,588	1,763
Other long-term assets	35,102	31,850
Total assets	2,082,793	1,902,745
Current liabilities:
Accounts payable	155,257	177,638
Accrued compensation	140,426	143,408
Billings in excess of costs on uncompleted contracts	144,327	117,499
Current portion of long-term debt	15,466	15,588
Current contingent earn-out liabilities	11,669	2,024
Other current liabilities	92,863	81,511
Total current liabilities	560,008	537,668
Deferred tax liabilities	45,740	43,781
Long-term debt	463,544	341,283
Long-term contingent earn-out liabilities	18,443	414
Other long-term liabilities	54,830	50,975
Commitments and contingencies (Note 14)
Equity:
Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at April 1, 2018 and October 1, 2017	0	0
Common stock - authorized, 150,000 shares of $0.01 par value; issued and outstanding, 55,749 and 55,873 shares at April 1, 2018 and October 1, 2017, respectively	557	559
Additional paid-in capital	161,387	193,835
Accumulated other comprehensive loss	(118,044)	(98,500)
Retained earnings	896,146	832,559
Tetra Tech stockholders’ equity	940,046	928,453
Noncontrolling interests	182	171
Total stockholders' equity	940,228	928,624
Total liabilities and stockholders' equity	$ 2,082,793	$ 1,902,745

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.