For the three and six months ended June 30, 2023 and 2022, respectively, our income per common share was calculated as follows: (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 1,157,076	$ 983,305	$ 517,636	$ (32,931)	$ 2,140,381	$ 484,705
Income per common share, diluted
Income (loss) per common share, diluted	$ 0.09		$ 0.04		$ 0.17	$ 0.04
Shares used in computing income per common share, basic:
Total shares	12,558,793		12,439,000		12,539,652	12,401,281
Shares used in computing income per common share, diluted	12,625,241		12,534,058		12,606,100	12,496,339
Unrestricted Shares [Member]
Income per common share, basic:
Income (loss) per common share, basic	$ 0.09		$ 0.04		$ 0.17	$ 0.04
Shares used in computing income per common share, basic:
Total shares	12,429,894		12,305,939		12,412,068	12,275,306
Restricted Shares [Member]
Income per common share, basic:
Income (loss) per common share, basic	$ 0.09		$ 0.04		$ 0.17	$ 0.04
Shares used in computing income per common share, basic:
Total shares	128,899		133,061		127,584	125,975