Fair Value Measurement - Estimated Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Assets:
Bank-Owned Certificates of Deposit	$ 2,654	$ 3,305
Securities Available for Sale, at Fair Value	289,877	253,378
Level 1
Financial Assets:
Cash and Due From Banks	31,935	28,444
Securities Available for Sale, at Fair Value	4,998	17,897
Level 2
Financial Assets:
Bank-Owned Certificates of Deposit	2,677	3,292
Securities Available for Sale, at Fair Value	284,879	235,481
FHLB Stock, at Cost	7,824	7,614
Loans, Net	1,891,987	1,634,196
Accrued Interest Receivable	6,775	6,589
Interest Rate Swaps	284	352
Financial Liabilities:
Deposits	1,821,915	1,560,488
Federal Funds Purchased		18,000
Notes Payable	13,022	15,551
FHLB Advances	141,152	124,952
Subordinated Debentures	25,309	25,365
Accrued Interest Payable	1,982	1,806
Interest Rate Swaps	902
Carrying Amount
Financial Assets:
Cash and Due From Banks	31,935	28,444
Bank-Owned Certificates of Deposit	2,654	3,305
Securities Available for Sale, at Fair Value	289,877	253,378
FHLB Stock, at Cost	7,824	7,614
Loans, Net	1,884,000	1,640,385
Accrued Interest Receivable	6,775	6,589
Interest Rate Swaps	284	352
Financial Liabilities:
Deposits	1,823,310	1,560,934
Federal Funds Purchased		18,000
Notes Payable	13,000	15,000
FHLB Advances	136,500	124,000
Subordinated Debentures	24,733	24,630
Accrued Interest Payable	1,982	1,806
Interest Rate Swaps	902
Estimated Fair Value
Financial Assets:
Cash and Due From Banks	31,935	28,444
Bank-Owned Certificates of Deposit	2,677	3,292
Securities Available for Sale, at Fair Value	289,877	253,378
FHLB Stock, at Cost	7,824	7,614
Loans, Net	1,891,987	1,634,196
Accrued Interest Receivable	6,775	6,589
Interest Rate Swaps	284	352
Financial Liabilities:
Deposits	1,821,915	1,560,488
Federal Funds Purchased		18,000
Notes Payable	13,022	15,551
FHLB Advances	141,152	124,952
Subordinated Debentures	25,309	25,365
Accrued Interest Payable	1,982	$ 1,806
Interest Rate Swaps	$ 902