Note 7 - Stockholders' Equity (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Jan. 01, 2022	Dec. 26, 2020	Mar. 31, 2021
Treasury Stock, Shares, Ending Balance (in shares)	3,700,000
Treasury Stock, Value, Ending Balance	$ 118,977	$ 90,473	$ 91,198
Common Class A [Member]
Treasury Stock, Shares, Acquired (in shares)	557,311	27,600
Treasury Stock, Value, Acquired, Cost Method	$ 27,800	$ 2,200