Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Total
Beginning balance, shares at Feb. 28, 2019	2,571,263	(669,304)
Beginning balance at Feb. 28, 2019	$ 19	$ (1,761)	$ 1,834	$ 5,806	$ 5,898
Adjustment for Adoption of ASC 842				(91)	(91)
Net income (loss)				(249)	(249)
Ending balance, shares at May. 31, 2019	2,571,263	(669,304)
Ending balance at May. 31, 2019	$ 19	$ (1,761)	1,834	5,466	5,558
Beginning balance, shares at Feb. 28, 2019	2,571,263	(669,304)
Beginning balance at Feb. 28, 2019	$ 19	$ (1,761)	1,834	5,806	5,898
Adjustment for Adoption of ASC 842					(91)
Net income (loss)					(531)
Ending balance, shares at Nov. 30, 2019	2,571,263	(508,314)
Ending balance at Nov. 30, 2019	$ 21	$ (1,481)	1,834	5,184	5,558
Beginning balance, shares at May. 31, 2019	2,571,263	(669,304)
Beginning balance at May. 31, 2019	$ 19	$ (1,761)	1,834	5,466	5,558
Stock based compensation, shares		161,000
Stock based compensation	2	$ 280			282
Net income (loss)				(320)	(320)
Ending balance, shares at Aug. 31, 2019	2,571,263	(508,304)
Ending balance at Aug. 31, 2019	$ 21	$ (1,481)	1,834	5,146	5,520
Purchase of common stock, shares		(10)
Purchase of common stock					0
Net income (loss)				38	38
Ending balance, shares at Nov. 30, 2019	2,571,263	(508,314)
Ending balance at Nov. 30, 2019	$ 21	$ (1,481)	1,834	5,184	5,558
Beginning balance, shares at Feb. 29, 2020	2,571,263	(508,314)
Beginning balance at Feb. 29, 2020	$ 21	$ (1,481)	1,834	5,109	5,483
Adjustment for Adoption of ASC 842					0
Net income (loss)				369	369
Ending balance, shares at May. 31, 2020	2,571,263	(508,314)
Ending balance at May. 31, 2020	$ 21	$ (1,481)	1,834	5,478	5,852
Beginning balance, shares at Feb. 29, 2020	2,571,263	(508,314)
Beginning balance at Feb. 29, 2020	$ 21	$ (1,481)	1,834	5,109	5,483
Adjustment for Adoption of ASC 842					0
Net income (loss)					977
Ending balance, shares at Nov. 30, 2020	2,571,263	(487,801)
Ending balance at Nov. 30, 2020	$ 21	$ (1,412)	1,834	6,086	6,529
Beginning balance, shares at May. 31, 2020	2,571,263	(508,314)
Beginning balance at May. 31, 2020	$ 21	$ (1,481)	1,834	5,478	5,852
Purchase of common stock, shares		(2,493)
Purchase of common stock		$ (6)			(6)
Net income (loss)				635	635
Ending balance, shares at Aug. 31, 2020	2,571,263	(510,807)
Ending balance at Aug. 31, 2020	$ 21	$ (1,487)	1,834	6,113	6,481
Issuance of common stock, shares		23,006
Stock based compensation				75	75
Net income (loss)				(27)	(27)
Ending balance, shares at Nov. 30, 2020	2,571,263	(487,801)
Ending balance at Nov. 30, 2020	$ 21	$ (1,412)	$ 1,834	$ 6,086	$ 6,529