Note 6 - Stock-based Compensation - Option Activity (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Dec. 01, 2019 USD ($) $ / shares shares	Mar. 03, 2019 USD ($)
Outstanding options (in shares) | shares	540,709
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 13.49
Outstanding aggregate intrinsic value | $	$ 1,467	$ 1,525
Outstanding options, granted (in shares) | shares	114,450
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 16.44
Outstanding options, exercised (in shares) | shares	(31,986)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 12.69
Outstanding options, terminated or expired (in shares) | shares	(104,814)
Terminated or expired, weighted average exercise price (in dollars per share) | $ / shares	$ 16.98
Outstanding options (in shares) | shares	518,359
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 13.48
Balance, weighted average remaining contractual term (Year)	5 years 277 days
Vested and exercisable (in shares) | shares	375,422
Vested and exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 13.02
Vested and exercisable, weighted average remaining contractual term (Year)	4 years 182 days
Exercisable aggregate intrinsic value | $	$ 1,235