Earnings Per Share (''EPS'') (Tables)

9 Months Ended

Jun. 29, 2014

Earnings Per Share (''EPS'')

Schedule of number of weighted-average shares used to compute basic and diluted EPS

	Three Months Ended				Nine Months Ended
	June 29, 2014		June 30, 2013		June 29, 2014		June 30, 2013
	(in thousands, except per share data)
Net income (loss) attributable to Tetra Tech	$	26,657	$	(78,385)	$	85,680	$	(27,342)
Weighted-average common shares outstanding – basic	64,566		64,832		64,683		64,554
Effect of dilutive stock options and unvested restricted stock	736		–		810		–
Weighted-average common stock outstanding – diluted	65,302		64,832		65,493		64,554
Earnings (loss) per share attributable to Tetra Tech:
Basic	$	0.41	$	(1.21)	$	1.32	$	(0.42)
Diluted	$	0.41	$	(1.21)	$	1.31	$	(0.42)