Note 6 - Leases - Supplemental Balance Sheet Information (Details) (Parentheticals)	Mar. 31, 2026	Mar. 31, 2025
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization	Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization

Indicates line item in statement of financial position that includes operating lease right-of-use asset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-2

Name:	us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	instant