STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
STATEMENTS OF CASH FLOWS
Net income	$ 826	$ 3,508
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	363	264
Operating lease expense	0	340
Net realized and unrealized (gains) on investments	(868)	(44)
PPP loan forgiveness	0	(812)
Accrued interest income on short-term investments	(26)	0
Gain on sale of fixed assets	0	(17)
Changes in Operating Assets and Liabilities:
Accounts receivable	807	(285)
Inventories	(155)	461
Prepaid expenses and other current assets	(7)	176
Other assets	(10)	36
Payments on operating lease liabilities	0	(377)
Payments on capital lease liabilities	(9)	(9)
Accounts payable	6	(30)
Customer deposits	7	(25)
Accrued expenses, other current and non-current liabilities	19	148
Net cash provided by operating activities	953	3,334
Investing activities
Proceeds from sale of marketable securities	971	270
Purchases of marketable securities	(1,313)	(660)
Purchases of short-term investments	(2,494)	0
Maturities of short-term investments	1,533	0
Expenditures on construction in progress	0	(609)
Purchases of property and equipment	(2,188)	(4,890)
Net cash (used in) investing activities	(3,491)	(5,889)
Financing activities
Proceeds from mortgage loan	0	2,940
Principal payments on mortgage loan	(103)	(82)
Net cash provided by (used in) financing activities	(103)	2,858
Net increase (decrease) in cash and cash equivalents	(2,641)	303
Cash and cash equivalents - beginning of the year	4,088	3,785
Cash and cash equivalents - end of period	1,447	4,088
Supplemental disclosures of cash flow data
Income taxes paid	0	0
Interest expense paid	$ 108	$ 102