Segment Reporting - Schedule of Operating Results by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Segment Reporting Information [Line Items]
Net Sales	$ 45,235	$ 38,249	$ 126,465	$ 118,536
Gross Profit	15,766	12,670	42,468	38,301
PMT
Segment Reporting Information [Line Items]
Net Sales	35,237	28,988	98,418	89,158
Gross Profit	12,308	9,519	33,530	28,547
Canvys
Segment Reporting Information [Line Items]
Net Sales	7,078	7,200	20,491	22,333
Gross Profit	2,493	2,362	7,156	7,268
Healthcare
Segment Reporting Information [Line Items]
Net Sales	2,920	2,061	7,556	7,045
Gross Profit	$ 965	$ 789	$ 1,782	$ 2,486