Income Taxes - Income tax expense (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Taxes
Federal	$ 155,900	$ 185,183	$ 288,000	$ 316,185
State and local	11,475	15,006	23,575	22,097
Total	$ 167,375	$ 200,189	$ 311,575	$ 338,282

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration