Troubled Debt Restructurings (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) loan contract	Dec. 31, 2019 USD ($) loan
Financing Receivable Modifications [Line Items]
Number of troubled debt restructured loans \| loan	17	18
Total troubled debt restructured loans \| $	$ 3,300	$ 3,000
Financing Receivable, Modifications, Nonaccrual, Number of Contracts \| loan	3	4
Financing Receivable, Modifications, Nonaccrual, Recorded Investment \| $	$ 796	$ 401
Number of deferral loans of interest and principal payments \| loan	255
Deferrals on outstanding loan balances \| $	$ 128,700
Number of loans making payment after deferral option passed \| loan	241
Number of contractions modified by granting concession	5
Consumer Installment
Financing Receivable Modifications [Line Items]
Number of contracts modified by changing the amortization period	1
Residential Single Family
Financing Receivable Modifications [Line Items]
Number of contracts modified by changing the amortization period	1
Number of contracts modified by reduced payment amount	1
Number of contracts modified by new policy exception	1
Loan is considered payment default	30 days
Commercial Real Estate
Financing Receivable Modifications [Line Items]
Number of contracts modified by granting interest	1
Payment Deferral [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Deferrals on outstanding loan balances \| $	$ 130,500

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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