Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Feb. 26, 2023 USD ($)	Feb. 27, 2022 USD ($)	Feb. 28, 2021 USD ($)
Cash flows from operating activities:
Net earnings	$ 10,731	$ 8,464	$ 4,864
Loss from discontinued operations, net of tax	0	0	328
Net earnings from continuing operations	10,731	8,464	5,192
Depreciation and amortization	1,136	1,136	1,150
Stock-based compensation	369	285	191
Allowance for bad debt	16	16	16
Provision for deferred income taxes	322	894	(56)
Amortization of bond premium	42	956	543
Loss (gain) on sale of marketable securities	5	10	(10)
(Gain) loss on sale of fixed assets	(8)	27	0
Non-cash restructuring	0	0	1,318
Changes in operating assets and liabilities:
Accounts receivable	(1,665)	(722)	3,276
Inventories	(2,112)	137	1,585
Prepaid expenses and other current assets	238	(550)	157
Other assets and liabilities	(2,723)	111	250
Accounts payable	2,011	(766)	(1,435)
Accrued liabilities	(148)	(214)	(1)
Income taxes payable	(1,723)	(1,583)	1,164
Net cash provided by operating activities - continuing operations	6,491	8,201	13,340
Net cash used in operating activities - discontinued operations	0	0	(328)
Net cash provided by operating activities	6,491	8,201	13,012
Cash flows from investing activities:
Purchases of property, plant and equipment	(1,047)	(4,372)	(7,493)
Proceeds from sales of property, plant and equipment	8	14	0
Purchases of marketable securities	(63,275)	(59,422)	(83,941)
Proceeds from sales and maturities of marketable securities	57,296	34,224	124,392
Net cash (used in) provided by investing activities - continuing operations	(7,018)	(29,556)	32,958
Net cash provided by investing activities - discontinued operations	0	0	0
Net cash (used in) provided by investing activities	(7,018)	(29,556)	32,958
Cash flows from financing activities:
Dividends paid	(8,186)	(8,168)	(8,153)
Proceeds from exercise of stock options	139	739	12
Purchase of treasury stock	0	0	(1,644)
Net cash used in financing activities - continuing operations	(8,047)	(7,429)	(9,785)
Net cash used in financing activities - discontinued operations	0	0	0
Net cash used in financing activities	(8,047)	(7,429)	(9,785)
(Decrease) increase in cash and cash equivalents - continuing operations	(8,574)	(28,784)	36,513
Decrease in cash and cash equivalents - discontinued operations	0	0	(328)
(Decrease) increase in cash and cash equivalents	(8,574)	(28,784)	36,185
(Decrease) increase in cash and cash equivalents	(8,574)	(28,784)	36,185
Cash and cash equivalents, beginning of year	12,811	41,595	5,410
Cash and cash equivalents, end of year	4,237	12,811	41,595
Supplemental disclosure of non-cash activities:
Dividend payable included in current liabilities	$ 20,471	$ 0	$ 0