Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Activities
Net income	$ 12,965,439	$ 11,144,900
Items not requiring (providing) cash
Provision for loan losses	600,000	1,430,000
Depreciation and amortization	1,063,691	1,124,474
Deferred income tax	1,035,000	2,268,000
Stock based compensation	1,538,737	1,811,089
Investment securities amortization, net	1,546,615	2,526,033
Investment securities gains	0	(55,799)
Net gains on loan and lease sales	(639,274)	(2,450,083)
Loss on sale of real estate owned	10,882	1,278
Accretion of loan origination fees	(1,578,653)	(3,138,208)
Amortization of mortgage-servicing rights	224,274	412,941
ESOP shares expense	798,746	796,449
Increase in cash surrender value of life insurance	(55,359)	(93,404)
Loans originated for sale	(28,749,971)	(79,981,656)
Proceeds on loans sold	28,666,171	78,552,506
Net change in
Interest receivable	(517,654)	510,777
Other assets	(2,117,372)	(3,015,304)
Multi-employer pension plan liability	0	(17,454,709)
Other liabilities	2,257,577	(4,071,259)
Interest payable	1,111,319	35,914
Net cash provided by (used in) operating activities	18,160,168	(9,646,061)
Investing Activities
Net change in interest-bearing time deposits	(490,000)	0
Purchases of securities available for sale	(22,532,827)	(188,839,863)
Proceeds from maturities and paydowns of securities available for sale	32,181,335	61,825,965
Proceeds from sales of securities available for sale	0	5,296,930
Proceeds from maturities and paydowns of securities held to maturity	2,357,168	3,169,901
Net change in loans	(127,384,295)	(92,150,518)
Proceeds from sales of real estate owned	84,652	30,270
Purchases of premises and equipment	(385,099)	(579,452)
Change in FHLB stock	45,100	(942,800)
Net cash used in investing activities	(116,123,966)	(212,189,567)
Net change in
Demand and savings deposits	11,892,698	125,089,675
Certificates of deposit	93,192,672	82,040,330
Advances by borrowers for taxes and insurance	29,166	38,506
Proceeds from FHLB advances	327,500,000	209,000,000
Repayment of FHLB advances	(327,500,000)	(199,000,000)
Repurchase of common stock	(9,859,240)	(11,913,648)
Proceeds from stock option exercises	0	127,573
Dividends paid	(4,407,550)	(9,277,120)
Net cash provided by financing activities	90,847,746	196,105,316
Net Change in Cash and Cash Equivalents	(7,116,052)	(25,730,312)
Cash and Cash Equivalents, Beginning of Period	23,038,145	48,768,457
Cash and Cash Equivalents, End of Period	15,922,093	23,038,145
Additional Cash Flows and Supplementary Information
Interest paid	9,108,022	7,645,867
Income tax paid	2,180,634	2,900,000
Transfers from loans to other real estate owned	115,965	27,000
Right of use assets obtained in exchange for new operating lease liabilities	$ 504,682	$ 0