Earnings Per Share (Tables)

12 Months Ended

Oct. 02, 2016

Earnings Per Share

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

	Fiscal Year Ended
	October 2, 2016		September 27, 2015		September 28, 2014
	(in thousands, except per share data)
Net income attributable to Tetra Tech	$	83,783	$	39,074	$	108,266
Weighted-average common shares outstanding – basic		58,186		60,913		64,379
Effect of diluted stock options and unvested restricted stock		780		619		767
Weighted-average common stock outstanding – diluted		58,966		61,532		65,146
Earnings per share attributable to Tetra Tech:
Basic	$	1.44	$	0.64	$	1.68
Diluted	$	1.42	$	0.64	$	1.66