Loans (Impaired Financing Receivable) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Principal balance with related allowance	$ 1,144
Recorded investment with related allowance	1,132
Related allowance	235
Average investment with related allowance	1,152
Interest recognized with related allowance	19
Principal balance with no related allowance	1,225	$ 1,593
Recorded investment with no related allowance	1,123	1,556
Average investment with no related allowance	1,160	1,590
Interest recognized with no related allowance	10	31
Impaired Financing Receivable, Unpaid Principal Balance, Total	2,369
Impaired Financing Receivable, Recorded Investment, Total	2,255
Impaired Financing Receivable, Average Recorded Investment, Total	2,312
Impaired Financing Receivable, Interest Income, Accrual Method, Total	29
Commercial and Industrial [Member] \| Commercial Portfolio Segment [Member]
Principal balance with related allowance	729
Recorded investment with related allowance	729
Related allowance	158
Average investment with related allowance	740
Interest recognized with related allowance	19
Principal balance with no related allowance	73	89
Recorded investment with no related allowance	69	87
Average investment with no related allowance	77	93
Interest recognized with no related allowance	5	5
One-to-Four Family Owner-occupied [Member] \| Residential Real Estate and Consumer [Member]
Principal balance with no related allowance	795	1,142
Recorded investment with no related allowance	744	1,120
Average investment with no related allowance	754	1,137
Interest recognized with no related allowance	5	26
One-to-Four Family Investor-owned [Member] \| Residential Real Estate and Consumer [Member]
Principal balance with related allowance	415
Recorded investment with related allowance	403
Related allowance	77
Average investment with related allowance	412
Principal balance with no related allowance	243	248
Recorded investment with no related allowance	221	241
Average investment with no related allowance	231	246
Consumer [Member] \| Residential Real Estate and Consumer [Member]
Principal balance with no related allowance	114	114
Recorded investment with no related allowance	89	108
Average investment with no related allowance	$ 98	$ 114

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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