Note 12 - Share-based Compensation (Details Textual) shares in Thousands	Mar. 31, 2024 shares
The 2007 and 2012 Equity Incentive Plans [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	0

Aggregate number of common shares reserved for future issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant