Summary of Significant Accounting Policies - Schedule of fixed assets (Details) - USD ($) $ in Thousands	May 31, 2023	May 31, 2022
Fixed Assets
Fixed assets, gross	$ 137,975	$ 112,556
Less: accumulated depreciation	(77,508)	(73,258)
Net depreciable fixed assets	60,467	39,298
Fixed assets, net	86,011	101,762
Building and building equipment
Fixed Assets
Fixed assets, gross	50,316	50,177
Furniture and fixtures
Fixed Assets
Fixed assets, gross	6,332	6,254
Computer software and hardware
Fixed Assets
Fixed assets, gross	80,201	55,101
Other
Fixed Assets
Fixed assets, gross	1,126	1,024
Land
Fixed Assets
Fixed assets, gross	23,796	23,796
Software development in progress
Fixed Assets
Fixed assets, gross	$ 1,748	$ 38,668