Carrying Amounts and Fair Value of Financial Instruments (Summary of the carrying value and estimated fair value of financial instruments) (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Financial Assets:
Cash And Cash Equivalents	$ 31,110,000	$ 27,623,000
Cash and Cash Equivalents	31,110,278	27,622,851	$ 19,104,797	$ 18,025,409
Certificates of Deposits With Other Banks	1,100,000	1,100,000
Investments	690,118,469	706,355,826
Investment And Mortgage-Backed Securities	21,041,000	682,849,000
Loans Receivable, Net	500,700,000	503,986,000
FHLB Stock	651,000	586,000
Financial Liabilities:
Checking, Savings, And Money Market Accounts	973,607,000	958,601,000
Certificate Accounts, Carrying Value		157,362,000
Certificate Accounts	150,839,000	157,201,000
Other Borrowed Money	34,252,000	26,785,000
Other Borrowings	34,251,923	26,785,393
Junior Subordinated Debentures	5,155,000	5,155,000
Interest-bearing Deposits in Banks and Other Financial Institutions	1,100,045	1,100,045
Fair Value, Inputs, Level 1
Financial Assets:
Cash And Cash Equivalents		27,623,000
Cash and Cash Equivalents	31,110,000
Certificates of Deposits With Other Banks	0	0
Investment And Mortgage-Backed Securities	0	0
Loans Receivable, Net	0	0
FHLB Stock		586,000
Federal Home Loan Bank ("FHLB") Stock, at Cost	651,000
Financial Liabilities:
Checking, Savings, And Money Market Accounts	973,607,000	958,601,000
Certificate Accounts	0	0
Other Borrowed Money		26,785,000
Other Borrowings	34,252,000
Junior Subordinated Debentures	0	0
Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash And Cash Equivalents	0	0
Certificates of Deposits With Other Banks		1,100,000
Certificates of Deposit with Other Banks	1,100,000
Investment And Mortgage-Backed Securities	21,041,000	682,849,000
Loans Receivable, Net	0	0
FHLB Stock	0	0
Financial Liabilities:
Checking, Savings, And Money Market Accounts	0	0
Certificate Accounts	150,839,000	157,201,000
Other Borrowed Money	0	0
Junior Subordinated Debentures	5,155,000	5,155,000
Fair Value, Inputs, Level 3
Financial Assets:
Cash And Cash Equivalents	0	0
Certificates of Deposits With Other Banks	0	0
Investment And Mortgage-Backed Securities	0	0
Loans Receivable, Net	500,700,000	503,986,000
FHLB Stock	0	0
Financial Liabilities:
Checking, Savings, And Money Market Accounts	0	0
Certificate Accounts	0	0
Other Borrowed Money	0	0
Junior Subordinated Debentures	$ 0	$ 0