Subordinated Debentures (Narrative) (Details) - USD ($)	1 Months Ended	9 Months Ended
	Dec. 31, 2018	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2003
Subsidiary, Sale of Stock [Line Items]
Subordinated debentures		$ 14,835,000	$ 14,806,000	$ 5,155,000
Holding Company's investment in the common stock				$ 155,000
Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Holding Company, closed a pooled private offering				5,000
Trust preferred securities with a liquidation amount				$ 1
Subordinated [Member]
Subsidiary, Sale of Stock [Line Items]
Maturity date		Dec. 30, 2033
Required principal payments over next five years		$ 0
Number of years with no principal repayment		5 years
Maximum number of years for deferred interest payments		5 years
Subordinated [Member] | Subordinated Debentures Maturing On December 30,2033 [Member]
Subsidiary, Sale of Stock [Line Items]
Holding Company may redeem the subordinated debentures in a principal amount with integral multiples				$ 1
Percentage in which holding company redeem subordinated debentures				100.00%
Trust preferred securities and subordinated debentures have a stated percentage		3.16%	4.81%
Subordinated [Member] | Fixed-To-Floating Rate Subordinated Notes [Member] | Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Maturity date	Dec. 30, 2028
Subordinated notes	$ 10,000,000	$ 9,680,000
Interest rate	7.00%
Debt issuance costs	$ 388,000
London Interbank Offered Rate [Member] | Subordinated [Member] | Subordinated Debentures Maturing On December 30,2033 [Member]
Subsidiary, Sale of Stock [Line Items]
Variable rate of interest		2.85%
London Interbank Offered Rate [Member] | Subordinated [Member] | Fixed-To-Floating Rate Subordinated Notes [Member]
Subsidiary, Sale of Stock [Line Items]
Subordinated notes		$ 9,612,000
London Interbank Offered Rate [Member] | Subordinated [Member] | Fixed-To-Floating Rate Subordinated Notes [Member] | Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Variable rate of interest	4.14%