Related Party Transactions (Narrative) (Details) $ in Thousands				3 Months Ended	6 Months Ended
	Mar. 20, 2020 USD ($) loan	Jan. 23, 2020 loan	Aug. 14, 2013 USD ($) loan	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($) loan	Jun. 30, 2019 loan	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Loans sold to related party					$ 1,164
ECCU [Member]
Related Party Transaction [Line Items]
Number of Loans purchased from related party | loan					0	0
Number of loans sold to related party | loan		1				0
ACCU [Member]
Related Party Transaction [Line Items]
Loans sold to related party				$ 441
UFCU [Member]
Related Party Transaction [Line Items]
Number of loans sold to related party | loan			1
Loans sold to related party			$ 5,000
Board of Directors and Executive Management [Member]
Related Party Transaction [Line Items]
Notes held by related parties				211	$ 211		$ 368
Navy Federal Credit Union [Member]
Related Party Transaction [Line Items]
Number of loans sold to related party | loan	1
Loans sold to related party	$ 5,000
Outstanding balance				$ 1,100	$ 1,100
Minimum [Member] | MP Securities [Member]
Related Party Transaction [Line Items]
Related party servicing fee					0.25%
Maximum [Member] | MP Securities [Member]
Related Party Transaction [Line Items]
Related party servicing fee					5.50%
MP Securities [Member] | ECCU [Member] | Networking Agreement [Member]
Related Party Transaction [Line Items]
Notice period for termination of agreement					30 days
MP Securities [Member] | ACCU [Member] | Networking Agreement [Member]
Related Party Transaction [Line Items]
Notice period for termination of agreement					30 days