Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 23, 2020	Feb. 28, 2021	Feb. 23, 2020	May 31, 2020
Income Tax Disclosure [Abstract]
Income tax benefit	$ (217)	$ (5,310)	$ (7,226)	$ (7,840)
Effective tax rate			19.50%	25.00%
Unrecognized tax benefits	900		$ 900		$ 800
Unrecognized tax benefits that would result in an adjustment to effective tax rate	$ 900		$ 900		$ 700