Loans and Allowance for Loan Losses - Impaired Loans Specific Valuation Allowance (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans and Allowance for Loan Losses
Impaired Loans With Specific Valuation Allowance	$ 4,800,000	$ 5,200,000	$ 8,400,000
Impaired Loans Valuation Allowance	713,000	929,000	2,000,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	$ 579,000	$ 761,000	$ 1,000,000

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554

Name:	us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration