Loans and Allowance for Loan Losses - Additional Information (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) customer item	Dec. 31, 2019 USD ($) item	Sep. 30, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment		$ 281,553
Number of loans that were modified and impaired | item	0
Number of TRDs modified that subsequently defaulted | item	0
Specific Allowance	$ 28,735	28,735	$ 37,600
Non-accrual loans excluding TDRs	$ 1,068,000	$ 1,445,000
Minimum consecutive period of payment performance	6 months
Number of foreclosed real estate properties | item	0	0
Consumer mortgage loans in process of foreclosure	$ 65,446
Number of consumer for mortgage loan in process of foreclosure | customer	1
Number of TDRs	0	4
Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDRs that did not meet criteria for placement back on accrual status | item	0
Entity Loan Modification Program [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on accrual status	$ 855,000
Entity Loan Modification Program [Member] | Multi Family And Nonresidential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on accrual status	$ 213,000
Non Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment		$ 0
Number of TDRs		0
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment		$ 0
Number of TDRs		0
Other Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment		$ 0
Number of TDRs		0