Related Party Transactions (Summary of Related Party Balances) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ECCU [Member]
Related Party Transaction [Line Items]
Total funds held on deposit	$ 3,482	$ 365
Loan participations purchased from and serviced by related party	259	1,495
ACCU [Member]
Related Party Transaction [Line Items]
Total funds held on deposit	6,720	10,343
Loan participations purchased from and serviced by related party	$ 1,126	$ 1,603