Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Nov. 23, 2020	Feb. 28, 2021	Feb. 29, 2020
Cash paid for:
Interest		$ 10	$ 2
Non-cash activity:
Note receivable paid directly to officer (Z-Axis; Note 4)		189	209
Note payable to officer		189	209
Forgiveness of PPP loans		988	0
Equipment finance lease	$ 277	277	0
Reduction in related party rent owed to officer (originally recorded in accounts payable) in change for a note payable (Note 4)		0	439
Imputed interest expense		8	27
Imputed interest income		8	27
Jaco Display Solutions LLC [Member]
Non-cash activity:
Note payable to officer		0	356
Ronald D. Ordway
Non-cash activity:
Forgiveness of accrued interest owed on related party note to officer		$ 36	$ 0