Note 5 - Stock-based Compensation - Non-vested Options (Details) - $ / shares	12 Months Ended
	Mar. 01, 2020	Mar. 03, 2019	Feb. 25, 2018
Non-vested, beginning of year (in shares)	25,600
Non-vested, beginning of year (in dollars per share)	$ 3.50
Granted (in shares)	114,450	2,650
Granted (in dollars per share)	$ 3.97	$ 3.66
Vested (in shares)	(22,960)
Vested (in dollars per share)	$ 3.48
Terminated or expired (in shares)	(7,114)
Terminated or expired (in dollars per share)	$ 3.92
Non-vested, end of year (in shares)	109,976	25,600
Non-vested, end of year (in dollars per share)	$ 3.96	$ 3.50