Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Nov. 30, 2020	Nov. 30, 2020	Nov. 30, 2019
Supplemental Cash Flow Information [Line Items]
Cash paid for: Interest		$ 1	$ 1
Non-cash activity:
Note receivable paid directly to officer (Z- Axis; Note 7)		170	155
Note payable to officer (Z-Axis; Note 7)		170	155
Forgiveness of Lexel Imaging PPP loan	$ 216
Equipment finance lease	$ 277	277
Imputed interest expense		8	22
Imputed interest income		8	$ 22
Lexel Imaging PPP Loan [Member]
Non-cash activity:
Forgiveness of Lexel Imaging PPP loan		$ 216