Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 28, 2015	Sep. 28, 2014
Current assets:
Cash and cash equivalents	$ 175,183	$ 122,379
Accounts receivable - net	633,544	701,892
Prepaid expenses and other current assets	48,178	52,256
Income taxes receivable	13,562	22,076
Total current assets	870,467	898,603
Property and equipment - net	68,602	73,864
Investments in and advances to unconsolidated joint ventures	2,090	2,140
Goodwill	684,909	714,190
Intangible assets - net	49,197	63,095
Other long-term assets	28,257	24,512
Total assets	1,703,522	1,776,404
Current liabilities:
Accounts payable	141,011	175,952
Accrued compensation	113,346	110,186
Billings in excess of costs on uncompleted contracts	92,951	103,343
Deferred income taxes	26,373	20,387
Current portion of long-term debt	10,708	10,989
Estimated contingent earn-out liabilities	603	3,568
Other current liabilities	69,905	79,436
Total current liabilities	454,897	503,861
Deferred income taxes	31,279	28,786
Long-term debt	225,513	192,842
Long-term estimated contingent earn-out liabilities	3,524	3,462
Other long-term liabilities	$ 33,890	$ 34,397
Commitments and contingencies (Note 16)
Equity:
Preferred stock - Authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at June 28, 2015, and September 28, 2014
Common stock - Authorized, 150,000 shares of $0.01 par value; issued and outstanding, 60,162 and 62,591 shares at June 28, 2015, and September 28, 2014, respectively	$ 602	$ 626
Additional paid-in capital	344,833	402,516
Accumulated other comprehensive loss	(100,310)	(42,538)
Retained earnings	708,833	651,475
Tetra Tech stockholders' equity	953,958	1,012,079
Noncontrolling interests	461	977
Total equity	954,419	1,013,056
Total liabilities and equity	$ 1,703,522	$ 1,776,404