Loans and Allowance for Loan Losses - Summary of Internal Ratings of Loans (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 1,612,394,351	$ 1,556,091,888
Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	1,563,356,364	1,493,820,761
Special Mention
Accounts Notes And Loans Receivable [Line Items]
Total loans	20,162,795	31,038,591
Substandard
Accounts Notes And Loans Receivable [Line Items]
Total loans	21,034,728	22,347,042
Purchased Credit Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans	7,840,464	8,311,649
Doubtful
Accounts Notes And Loans Receivable [Line Items]
Total loans		573,845
Real Estate | Non-Farm Non-Residential Owner Occupied
Accounts Notes And Loans Receivable [Line Items]
Total loans	361,467,237	353,273,098
Real Estate | Non-Farm Non-Residential Owner Occupied | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	350,054,949	335,441,780
Real Estate | Non-Farm Non-Residential Owner Occupied | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Total loans	6,987,549	12,189,268
Real Estate | Non-Farm Non-Residential Owner Occupied | Substandard
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,424,739	5,642,050
Real Estate | Non-Farm Non-Residential Non-Owner Occupied
Accounts Notes And Loans Receivable [Line Items]
Total loans	345,359,923	277,804,173
Real Estate | Non-Farm Non-Residential Non-Owner Occupied | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	326,199,331	255,467,635
Real Estate | Non-Farm Non-Residential Non-Owner Occupied | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Total loans	8,391,737	12,705,637
Real Estate | Non-Farm Non-Residential Non-Owner Occupied | Substandard
Accounts Notes And Loans Receivable [Line Items]
Total loans	7,345,829	5,730,312
Real Estate | Non-Farm Non-Residential Non-Owner Occupied | Purchased Credit Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,423,026	3,900,589
Real Estate | Residential
Accounts Notes And Loans Receivable [Line Items]
Total loans	179,971,204	140,621,495
Real Estate | Residential | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	179,359,279	139,742,887
Real Estate | Residential | Substandard
Accounts Notes And Loans Receivable [Line Items]
Total loans	529,286	860,801
Real Estate | Residential | Purchased Credit Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans	82,639	17,807
Real Estate | Construction, Development & Other
Accounts Notes And Loans Receivable [Line Items]
Total loans	124,548,118	98,207,147
Real Estate | Construction, Development & Other | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	120,169,081	93,816,941
Real Estate | Construction, Development & Other | Substandard
Accounts Notes And Loans Receivable [Line Items]
Total loans	251,245	266,707
Real Estate | Construction, Development & Other | Purchased Credit Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,127,792	4,123,499
Real Estate | Farmland
Accounts Notes And Loans Receivable [Line Items]
Total loans	8,308,914	4,653,344
Real Estate | Farmland | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	8,308,914	4,653,344
Commercial & Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans	538,550,714	645,927,775
Commercial & Industrial | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	525,099,678	629,093,318
Commercial & Industrial | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,760,400	6,143,686
Commercial & Industrial | Substandard
Accounts Notes And Loans Receivable [Line Items]
Total loans	8,483,629	9,847,172
Commercial & Industrial | Purchased Credit Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans	207,007	269,754
Commercial & Industrial | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Total loans		573,845
Consumer
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,417,542	4,157,339
Consumer | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,394,433	4,157,339
Consumer | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Total loans	23,109
Other
Accounts Notes And Loans Receivable [Line Items]
Total loans	49,770,699	31,447,517
Other | Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 49,770,699	$ 31,447,517