Note 11 - Fair Value of Financial Instrument - Fair Value and Carrying Value of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Mar. 31, 2024	Sep. 30, 2023
Carrying value	$ 504,612	$ 604,786	$ 511,901
Fair value	$ 501,239	$ 599,408	$ 504,262

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant