FHLB Advances, Other Borrowings and Subordinated Notes (Summary of Pledged Securities Related to Securities Sold Under Repurchase Agreements) (Details) - Securities sold under repurchase agreements - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities sold under agreements to repurchase		$ 20,500	$ 9,700
Overnight Sweep Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged financial instruments	$ 18,595
Excess collateral	10,612
Securities sold under agreements to repurchase	$ 7,983