Subsequent Events (Narrative) (Details) - Veterans First Mortgage $ in Millions		12 Months Ended
	Jan. 04, 2018 USD ($) Loan office	Dec. 31, 2017 USD ($)
Subsequent Event [Line Items]
Residential mortgage loans originations | $		$ 800
Subsequent Event
Subsequent Event [Line Items]
Date of acquisition	Jan. 04, 2018
Loans acquired | Loan	8,300
Estimated principal balance | $	$ 1,400
Number of offices	3
UTAH | Subsequent Event
Subsequent Event [Line Items]
Number of offices	2
CALIFORNIA | Subsequent Event
Subsequent Event [Line Items]
Number of offices	1