Accrued Liabilities (Tables)

12 Months Ended

May 31, 2023

Payables and Accruals [Abstract]

Accrued liabilities

Accrued liabilities consist of the following:

(in thousands)	May 31, 2023		May 31, 2022
Payroll and related expenses	$	9,232	$	20,232
Outside services	7,088		3,731
Royalties	2,874		2,986
Research and development	1,525		1,279
Accrued severance	262		59
Sales and franchise taxes	480		750
Rebates	469		511
Other	4,687		5,294
Total	$	26,617	$	34,842