Note 6 - Stock-based Compensation - Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Nov. 27, 2022	Feb. 27, 2022
Outstanding options (in shares)	648,300
Balance, weighted average exercise price (in dollars per share)	$ 12.96
Outstanding aggregate intrinsic value	$ 610	$ 493
Outstanding options, granted (in shares)	131,600
Granted, weighted average exercise price (in dollars per share)	$ 12.06
Stock options exercised (in shares)	(13,000)
Exercised, weighted average exercise price (in dollars per share)	$ 10.67
Outstanding options, terminated or expired (in shares)	(74,225)
Terminated or expired, weighted average exercise price (in dollars per share)	$ 12.86
Outstanding options (in shares)	692,675
Balance, weighted average exercise price (in dollars per share)	$ 12.84
Balance, weighted average remaining contractual term (Year)	6 years 18 days
Outstanding options, vested and exercisable (in shares)	388,288
Vested and exercisable, weighted average exercise price (in dollars per share)	$ 12.74
Vested and exercisable, weighted average remaining contractual term (Year)	4 years 1 month 13 days
Vested and exercisable, aggregate intrinsic value	$ 381