Accrued Liabilities (Tables)

9 Months Ended

Feb. 28, 2019

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following: 

	Feb 28, 2019		May 31, 2018
(in thousands)
Payroll and related expenses	$	10,499	$	10,235
Royalties	1,645		1,537
Accrued severance	789		1,940
Sales and franchise taxes	870		683
Outside services	3,033		2,396
Litigation matters	—		12,500
Other	5,093		5,135
	$	21,929	$	34,426