Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 26, 2019	May 27, 2018
Current:
Federal	$ (7,836)	$ (67)	$ (2,854)
State	38	63	60
Foreign	56	83	83
Current income tax expense (benefit), total	(7,742)	79	(2,711)
Deferred:
Federal	(5,212)	1,581	(7,122)
State	(162)	(142)	470
Deferred income tax expense (benefit), total	(5,374)	1,439	(6,652)
Income tax expense (benefit)	$ (13,116)	$ 1,518	$ (9,363)