Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018
Numerator:
Income (loss) from continuing operations	$ (29,533)	$ 180,111	$ (142,889)
Loss from discontinued operations, net of tax	(1,548)	(3,774)	(13,535)
Net (loss) income	$ (31,081)	$ 176,337	$ (156,424)
Denominator:
Weighted average common shares for basic earnings per share	100,474	109,820	119,909
Net effect of dilutive stock based compensation awards		978
Weighted average common shares for diluted earnings per share	100,474	110,798	119,909
Basic (loss) earnings per share - continuing operations	$ (0.29)	$ 1.64	$ (1.19)
Basic loss per share-discontinued operations	(0.02)	(0.03)	(0.11)
Basic (loss) earnings per share	(0.31)	1.61	(1.30)
Diluted (loss) earnings per share - continuing operations	(0.29)	1.63	(1.19)
Diluted loss per share-discontinued operations	(0.02)	(0.04)	(0.11)
Diluted (loss) earnings per share	$ (0.31)	$ 1.59	$ (1.30)
Stock Options
Denominator:
antidilutive Securities	1,431	410	1,495