COMPUTATION OF EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 03, 2021	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Apr. 03, 2021	Mar. 28, 2020	Mar. 30, 2019
Earnings Per Share [Abstract]
Net loss	$ 10,977	$ 20,113	$ (13,405)	$ (75,015)	$ (677,918)	$ (78,483)	$ (25,910)	$ (44,871)	$ (57,331)	$ (827,182)	$ (135,561)
Earnings Per Share, Basic and Diluted
Weighted average common shares-basic									41,044	39,658	37,569
Weighted average common shares-diluted									41,044	39,658	37,569
Basic (in dollars per share)	$ 0.26	$ 0.49	$ (0.33)	$ (1.85)	$ (16.94)	$ (1.97)	$ (0.65)	$ (1.14)	$ (1.40)	$ (20.86)	$ (3.61)
Diluted (in dollars per share)	$ 0.25	$ 0.48	$ (0.33)	$ (1.85)	$ (16.94)	$ (1.97)	$ (0.65)	$ (1.14)	$ (1.40)	$ (20.86)	$ (3.61)
Potentially dilutive securities excluded from diluted loss per share because their effect is anti-dilutive									1,262	1,740	616