Subsequent events (Details Narrative) - $ / shares	Mar. 31, 2023	Jan. 31, 2023	Dec. 31, 2022
Shares of common stock, par value	$ 0.60		$ 0.60
Board of Directors [Member]
Shares of common stock, par value		$ 0.60

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