Note 7 - Stock Split (Details Textual) - $ / shares	Dec. 31, 2022	Dec. 31, 2021	Aug. 13, 2020
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Stock Split [Member]
Common Stock, Par or Stated Value Per Share			$ 0.01
Stockholders' Equity Note, Stock Split, Dividend Settlement, Percent			50.00%

Face amount or stated value per share of common stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant