Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Statement of Cash Flows [Abstract]
Net income (loss)	$ 977	$ (531)
Adjustments to reconcile net income (loss) to net cash provided in operating activities:
Depreciation and amortization	179	163
Operating lease expense	285	266
Net realized and unrealized losses (gains) on investments	(63)	3
Stock based compensation	75	282
Changes in operating assets and liabilties:
Accounts receivable	213	13
Inventories	(183)	1,161
Prepaid expenses and other current assets	(72)	(25)
Other assets	0	1
Payments on operating lease liabilities	(308)	(279)
Accounts payable	49	(304)
Customer deposits	(22)	33
Accrued expenses and other current and non-current liabilities	297	20
Net cash provided by operating activities	1,427	803
Investing Activities:
Proceeds from sale of securities	340	57
Purchases of securities	(379)	(51)
Purchases of property and equipment	(68)	(83)
Net cash (used in) investing activities	(107)	(77)
Financing Activities:
Proceeds from SBA Paycheck Protection Program loan	807	0
Purchase of treasury stock	(6)	0
Net cash provided by financing activities	801	0
Net increase (decrease) in cash and cash equivalents	2,121	726
Cash and cash equivalents - beginning of the year	1,332	394
Cash and cash equivalents - end of period	3,453	1,120
Non-cash Transactions:
Capitalization of ROU asset and liability	26	1,081
Adjustment for Adoption of ASC 842	$ 0	$ (91)