Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 27, 2015	Sep. 28, 2014
Current assets:
Cash and cash equivalents	$ 135,326	$ 122,379
Accounts receivable - net	636,030	701,892
Prepaid expenses and other current assets	42,125	52,256
Income taxes receivable	10,294	22,076
Total current assets	823,775	898,603
Property and equipment - net	64,906	73,864
Investments in and advances to unconsolidated joint ventures	1,886	2,140
Goodwill	601,379	714,190
Intangible assets - net	40,332	63,095
Other long-term assets	26,964	24,512
Total assets	1,559,242	1,776,404
Current liabilities:
Accounts payable	150,284	175,952
Accrued compensation	103,866	110,186
Billings in excess of costs on uncompleted contracts	93,989	103,343
Deferred income taxes	20,787	20,387
Current portion of long-term debt	11,904	10,989
Estimated contingent earn-out liabilities	609	3,568
Other current liabilities	69,003	79,436
Total current liabilities	450,442	503,861
Deferred income taxes	34,759	28,786
Long-term debt	180,972	192,842
Long-term estimated contingent earn-out liabilities	3,560	3,462
Other long-term liabilities	$ 32,711	$ 34,397
Commitments and contingencies (Note 18)
Equity:
Preferred stock - Authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at September 27, 2015 and September 28, 2014
Common stock - Authorized, 150,000 shares of $0.01 par value; issued and outstanding, 59,381 and 62,591 shares at September 27, 2015 and September 28, 2014, respectively	$ 594	$ 626
Additional paid-in capital	326,593	402,516
Accumulated other comprehensive loss	(143,171)	(42,538)
Retained earnings	672,309	651,475
Tetra Tech stockholders' equity	856,325	1,012,079
Noncontrolling interests	473	977
Total equity	856,798	1,013,056
Total liabilities and equity	$ 1,559,242	$ 1,776,404