Marketable securities and other investments (Details) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Cost	$ 6,451,072	$ 10,549,524
Gross Unrealized Losses	(46,505)	(930,781)
Fair Value	6,404,567	9,618,743
Other Securities
Cost	9,300	120,800
Gross Unrealized Losses	(4,806)	(89,900)
Fair Value	4,494	30,900
Brokerage Account
Cost	6,441,772	10,428,724
Gross Unrealized Losses	(41,699)	(840,881)
Fair Value	$ 6,400,073	$ 9,587,843

Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

Name:	us-gaap_DilutiveSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration