Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Apr. 03, 2021	Jan. 02, 2021	Oct. 03, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Apr. 03, 2021	Mar. 28, 2020
Numerator:
Net income (loss)	$ 107,484	$ 19,163	$ (18,889)	$ (128,661)	$ 3,668	$ 41,752	$ 107,759	$ (83,242)
Denominator:
Weighted average common shares for basic earnings per share	99,542			99,479			99,125	101,013
Net effect of dilutive stock based compensation awards	705						888
Weighted average common shares for diluted earnings per share	100,247			99,479			100,013	101,013
Basic earnings (loss) per share	$ 1.08			$ (1.29)			$ 1.09	$ (0.82)
Diluted earnings (loss) per share	$ 1.07			$ (1.29)			$ 1.08	$ (0.82)
Stock Options
Denominator:
antidilutive Securities	642			1,431			793	1,018