Note 6 - Stock-based Compensation - Option Activity (Details)	9 Months Ended
	Nov. 29, 2015 $ / shares shares
Balance (in shares) | shares	966,692
Balance (in dollars per share) | $ / shares	$ 22.55
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares	180,100
Granted (in dollars per share) | $ / shares	$ 21.52
Exercised (in shares) | shares	(2,500)
Exercised (in dollars per share) | $ / shares	$ 19.91
Terminated or expired (in shares) | shares	(117,250)
Terminated or expired (in dollars per share) | $ / shares	$ 21.53
Balance (in shares) | shares	1,027,042
Balance (in dollars per share) | $ / shares	$ 22.49
Vested and exercisable (in shares) | shares	682,850
Vested and exercisable (in dollars per share) | $ / shares	$ 22.19