General and administrative expenses (Tables)

6 Months Ended

Nov. 30, 2021

General And Administrative Expense [Abstract]

Schedule of General and Administrative Expenses

General and administrative expenses are comprised of:

	For the three months ended November 30,				For the six months ended November 30,
	2021		2020		2021		2020
Executive compensation	$	2,237	$	2,711	$	5,327	$	4,961
Office and general		5,206		4,418		17,973		8,839
Salaries and wages		8,149		8,821		23,460		18,164
Stock-based compensation		8,253		5,489		17,670		8,339
Insurance		4,995		2,904		9,626		6,110
Professional fees		3,355		3,171		6,068		6,106
Travel and accommodation		982		525		1,774		1,252
Rent		292		234		1,058		474
Total	$	33,469	$	28,273	$	82,956	$	54,245