Summary of Significant Accounting Policies - Foreclosed Assets (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Financing Receivable Impaired [Line Items]
Number of foreclosed residential real estate properties \| item	1
Proceeds from sales of foreclosed assets	$ 7,955	$ 13,188	$ 443
Residential Real Estate [Member]
Financing Receivable Impaired [Line Items]
Proceeds from sales of foreclosed assets	$ 1,089

The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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