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Note 4 - Fair Value Measurements - Fair Value and Carrying Value of the Notes (Details) - Senior Notes [Member] - USD ($)
$ in Thousands
Dec. 30, 2023
Mar. 31, 2023
Reported Value Measurement [Member]    
Notes $ 170,965 $ 170,272
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]    
Notes $ 158,916 $ 161,072