Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 27, 2025	Sep. 27, 2025	Dec. 28, 2024	Sep. 28, 2024	Dec. 27, 2025	Dec. 28, 2024
Numerator:
Net income	$ 61,733	$ 51,745	$ 87,253	$ 58,956	$ 113,478	$ 146,209
Denominator:
Weighted average common shares for basic earnings per share	81,445		86,846		82,221	87,469
Net effect of dilutive stock based compensation awards	1,342		1,481		1,404	1,390
Weighted average common shares for diluted earnings per share	82,787		88,327		83,625	88,859
Basic earnings per share	$ 0.76		$ 1		$ 1.38	$ 1.67
Diluted earnings per share	$ 0.75		$ 0.99		$ 1.36	$ 1.65