Note 3 - Earnings Per Common Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Net earnings	$ 23,111	$ 5,103
Deduct preferred stock dividends paid	6	6
Undistributed net earnings	23,105	5,097
Earnings attributable to participating preferred	25	20
Earnings attributable to common shareholders	$ 23,080	$ 5,077
Weighted average common shares outstanding (in shares)	7,596	8,155
Basic earnings per common share (in dollars per share)	$ 3.04	$ 0.62
Earnings attributable to common shareholders	$ 23,080	$ 5,077
Add dividends on convertible preferred stock	5	5
Earnings attributable to common stock on a diluted basis	$ 23,085	$ 5,082
Additional shares issued related to the equity compensation plan (in shares)	7	5
Additional shares to be issued under full conversion of preferred stock (in shares)	67	67
Total shares for diluted (in shares)	7,670	8,227
Diluted earnings per common share (in dollars per share)	$ 3.01	$ 0.62