Shareholders' Equity and Regulatory Matters - Additional Information (Details) - USD ($)		3 Months Ended
	May 01, 2009	Mar. 31, 2020	Mar. 31, 2018	Dec. 31, 2019
Shareholders' Equity and Regulatory Matters
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	499,029
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 4.43
Dividends Payable			$ 56,554
Preferred Stock, Shares Issued	14,738
Preferred Stock, Par or Stated Value Per Share	$ 4.00
Preferred Stock, Liquidation Preference Per Share	$ 1,000
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets		6.50%
Stock Redeemed or Called During Period, Shares			5,027
Payments to Acquire Businesses, Gross	$ 14,738,000
Deferred Tax Liabilities, Gross		$ 116,000		$ 38,000
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets		8.00%
Capital Required to be Well Capitalized to Risk Weighted Assets		10.00%
Tier One Leverage Capital Required to be Well Capitalized to Average Assets		5.00%
Description of Regulatory Requirements, Prompt Corrective Action		On September 17, 2019, the federal bank regulators issued a final rule required by the EGRRCPA that permits qualifying banks and bank holding companies that have less than $10 billion of assets, like the Company and the Bank, to elect to be subject to a 9% leverage ratio that would be applied using less complex leverage calculations (commonly referred to as the community bank leverage ratio or "CBLR"). Under the rule, which became effective January 1, 2020, banks and bank holding companies that opt into the CBLR framework and maintain a CBLR of greater than 9% would not be subject to other risk-based and leverage capital requirements under the Basel III Capital Rules and would be deemed to have met the well capitalized ratio requirements under the "prompt corrective action" framework.