Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 27, 2015	Sep. 27, 2015
Current assets:
Cash and cash equivalents	$ 125,088	$ 135,326
Accounts receivable - net	593,968	636,030
Prepaid expenses and other current assets	57,198	42,125
Income taxes receivable	13,483	10,294
Total current assets	789,737	823,775
Property and equipment - net	61,295	64,906
Investments in and advances to unconsolidated joint ventures	1,824	1,886
Goodwill	594,004	601,379
Intangible assets - net	35,663	40,332
Other long-term assets	44,971	26,964
Total assets	1,527,494	1,559,242
Current liabilities:
Accounts payable	119,922	150,284
Accrued compensation	91,633	103,866
Billings in excess of costs on uncompleted contracts	96,188	93,989
Deferred income taxes	16,953	20,787
Current portion of long-term debt	13,041	11,904
Estimated contingent earn-out liabilities	1,122	609
Other current liabilities	64,694	69,003
Total current liabilities	403,553	450,442
Deferred income taxes	39,177	34,759
Long-term debt	177,021	180,972
Long-term estimated contingent earn-out liabilities	3,088	3,560
Other long-term liabilities	$ 60,714	$ 32,711
Commitments and contingencies (Note 15)
Equity:
Preferred stock - Authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at December 27, 2015, and September 27, 2015
Common stock - Authorized, 150,000 shares of $0.01 par value; issued and outstanding, 58,909 and 59,381 shares at December 27, 2015, and September 27, 2015, respectively	$ 589	$ 594
Additional paid-in capital	310,662	326,593
Accumulated other comprehensive loss	(158,545)	(143,171)
Retained earnings	690,837	672,309
Tetra Tech stockholders' equity	843,543	856,325
Noncontrolling interests	398	473
Total equity	843,941	856,798
Total liabilities and equity	$ 1,527,494	$ 1,559,242