Carrying Amounts and Fair Value of Financial Instruments (Summary of the carrying value and estimated fair value of financial instruments) (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2012
Financial Assets:
Cash And Cash Equivalents	$ 8,392,000	$ 8,382,000
Cash And Cash Equivalents	8,392,324	8,381,951	$ 8,461,858	$ 10,192,702
Certificates of Deposits With Other Banks	3,445,000	3,445,000
Investments	418,597,996	405,386,968
Certificates Of Deposit With Other Banks	3,445,005	3,445,005
Investment And Mortgage-Backed Securities	418,638,000	405,196,000
Loans Receivable, Net	331,880,549	330,572,729
Loans Receivable, Net	332,763,000	327,460,000
Investment in Federal Home Loan Bank Stock, Carrying Value		2,215,000
FHLB Stock	2,056,000	2,215,000
Federal Home Loan Bank (FHLB) Stock, At Cost	2,055,500	2,214,800
Certificate Accounts, Fair Value Disclosure	236,836,000	235,476,000
FHLB Advances, Carrying Value		34,640,000
Checking, Savings, And Money Market Accounts, Carrying Value Disclosure		415,975,000
Financial Liabilities:
Checking, Savings, And Money Market Accounts	424,381,000	415,975,000
Advances From FHLB	30,890,000	34,640,000
Advances From FHLB	31,628,000	35,676,000
Other Borrowed Money	8,707,000	6,412,000
Other Borrowings	8,707,151	6,411,977
Senior Convertible Debentures	6,084,000	6,084,000
Junior Subordinated Debentures	5,155,000	5,155,000
Junior Subordinated Debentures	5,155,000	5,155,000
Senior Convertible Debentures	6,084,000	6,084,000
Certificate Accounts, Carrying Value	236,851,000	236,122,000
Fair Value, Inputs, Level 1
Financial Assets:
Cash And Cash Equivalents		8,382,000
Cash And Cash Equivalents	8,392,000
Certificates of Deposits With Other Banks	0	0
Investment And Mortgage-Backed Securities	0	0
Loans Receivable, Net	0	0
FHLB Stock		2,215,000
Federal Home Loan Bank (FHLB) Stock, At Cost	2,056,000
Certificate Accounts, Fair Value Disclosure	0	0
Financial Liabilities:
Checking, Savings, And Money Market Accounts	424,381,000	415,975,000
Advances From FHLB	0	0
Other Borrowed Money		6,412,000
Other Borrowings	8,707,000
Senior Convertible Debentures	0	0
Junior Subordinated Debentures	0	0
Fair Value, Inputs, Level 2
Financial Assets:
Cash And Cash Equivalents	0	0
Certificates of Deposits With Other Banks		3,445,000
Certificates Of Deposit With Other Banks	3,445,000
Investment And Mortgage-Backed Securities	418,638,000	405,196,000
Loans Receivable, Net	0	0
FHLB Stock	0	0
Certificate Accounts, Fair Value Disclosure	236,836,000	235,476,000
Financial Liabilities:
Checking, Savings, And Money Market Accounts	0	0
Advances From FHLB	31,628,000	35,676,000
Other Borrowed Money	0	0
Senior Convertible Debentures		6,084,000
Junior Subordinated Debentures	6,084,000
Junior Subordinated Debentures		5,155,000
Senior Convertible Debentures	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	332,763,000	327,460,000
FHLB Stock	0	0
Certificate Accounts, Fair Value Disclosure	0	0
Financial Liabilities:
Checking, Savings, And Money Market Accounts	0	0
Advances From FHLB	0	0
Other Borrowed Money	0	0
Senior Convertible Debentures	0	0
Junior Subordinated Debentures	$ 0	$ 0