Earnings per Share ("EPS") (Tables)

6 Months Ended

Apr. 03, 2022

Earnings Per Share [Abstract]

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

The following table presents the number of weighted-average shares used to compute basic and diluted EPS:

	Three Months Ended				Six Months Ended
	April 3, 2022		March 28, 2021		April 3, 2022		March 28, 2021
	(in thousands, except per share data)
Net income attributable to Tetra Tech	$	53,040	$	45,517	$	121,529	$	97,953
Weighted-average common shares outstanding – basic	53,834		54,187		53,916		54,085
Effect of dilutive stock options and unvested restricted stock	512		549		576		630
Weighted-average common shares outstanding – diluted	54,346		54,736		54,492		54,715
Earnings per share attributable to Tetra Tech:
Basic	$	0.99	$	0.84	$	2.25	$	1.81
Diluted	$	0.98	$	0.83	$	2.23	$	1.79