Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	May 31, 2023	May 31, 2022
Leases [Abstract]
Operating lease ROU assets	$ 5,113	$ 6,974
Less: Current portion of lease obligations	1,922	2,560
Long-term lease obligations	3,316	4,703
Total lease obligations	$ 5,238	$ 7,263
Weighted average remaining term (in years)	3 years 18 days	3 years 3 months
Weighted average discount rate	4.10%	3.80%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent