Loans (Purchased Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Carrying Value of Purchased Loans	$ 11,083	$ 25,794
Credit Impaired [Member]
Contractually Required Payments Receivable	0	0
Non-Credit Impaired [Member]
Contractually Required Payments Receivable	11,160	25,984
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Carrying Value of Purchased Loans		7,673
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Non-Credit Impaired [Member]
Contractually Required Payments Receivable		7,687
Residential Real Estate and Consumer [Member] | One-to-Four Family Owner-occupied [Member]
Carrying Value of Purchased Loans	4,548	5,014
Residential Real Estate and Consumer [Member] | One-to-Four Family Owner-occupied [Member] | Non-Credit Impaired [Member]
Contractually Required Payments Receivable	4,580	5,075
Residential Real Estate and Consumer [Member] | One-to-Four Family Investor-owned [Member]
Carrying Value of Purchased Loans	6,535	9,164
Residential Real Estate and Consumer [Member] | One-to-Four Family Investor-owned [Member] | Non-Credit Impaired [Member]
Contractually Required Payments Receivable	$ 6,580	9,269
Residential Real Estate and Consumer [Member] | Multifamily Loan [Member]
Carrying Value of Purchased Loans		3,943
Residential Real Estate and Consumer [Member] | Multifamily Loan [Member] | Non-Credit Impaired [Member]
Contractually Required Payments Receivable		$ 3,953