Note 14 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	12 Months Ended
Apr. 03, 2022	Mar. 28, 2021
Royalty Expense	$ 6.0	$ 5.7
Royalty Expense Due	4.4
Royalty Expense Due in Next Twelve Months	2.9
Royalty Expense Due in Two Years	$ 1.5

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Name:	us-gaap_RoyaltyExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration