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Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($)
$ in Thousands
Feb. 29, 2020
Jun. 01, 2019
Finite-Lived Intangible Assets [Line Items]    
Finite Lived Intangible Assets Gross $ 4,464 $ 4,460
Finite Lived Intangible Assets Accumulated Amortization 1,892 1,697
Intangible assets, net 2,572 2,763
Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Finite Lived Intangible Assets Gross 659 659
Finite Lived Intangible Assets Accumulated Amortization 659 659
Customer Relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite Lived Intangible Assets Gross [1] 3,398 3,394
Finite Lived Intangible Assets Accumulated Amortization 955 796
Non-compete Agreements    
Finite-Lived Intangible Assets [Line Items]    
Finite Lived Intangible Assets Gross 177 177
Finite Lived Intangible Assets Accumulated Amortization 155 139
Technology    
Finite-Lived Intangible Assets [Line Items]    
Finite Lived Intangible Assets Gross 230 230
Finite Lived Intangible Assets Accumulated Amortization $ 123 $ 103
[1] Change from prior periods reflect impact of foreign currency translation.