Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Dec. 27, 2015	Dec. 28, 2014
Condensed Consolidated Statements of Comprehensive Income
Net income including noncontrolling interests	$ 23,240	$ 25,646
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(16,474)	(24,510)
Gain (loss) on cash flow hedge valuations	1,110	(480)
Other comprehensive loss, net of tax	(15,364)	(24,990)
Comprehensive income including noncontrolling interests	7,876	656
Net income attributable to noncontrolling interests	(1)	(71)
Foreign currency translation adjustments, net of tax	(10)	(59)
Comprehensive income attributable to noncontrolling interests	(11)	(130)
Comprehensive income attributable to Tetra Tech	$ 7,865	$ 526

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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