Certificate of deposit penalty fees for withdrawals.

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- Definition

Estimated amount of relief fund.

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Expected annualized expense savings.

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Increase decrease in deferred tax assets.

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Number of additional branches planned to close.

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Number of identified portfolio segments.

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- Definition

Offering unsecured personal loans, amount.

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Offering unsecured personal loans, percentage.

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Offering unsecured personal loans, period.

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Severance costs and real estate related charges.

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Significant Accounting Policies [Line Items]

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- Definition

Stock repurchase program percentage of shares authorized to be repurchased.

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Amount of increase (decrease) of allowance reserve for credit loss.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)			1 Months Ended	3 Months Ended	4 Months Ended	9 Months Ended
	Oct. 07, 2020 USD ($)	Mar. 27, 2020 USD ($)	Oct. 31, 2020 USD ($) Branch	Dec. 31, 2020 USD ($)	Jul. 09, 2020 USD ($)	Sep. 30, 2020 USD ($) Segment	Nov. 06, 2020 shares	Dec. 31, 2019 USD ($)
Significant Accounting Policies [Line Items]
Retained earnings						$ 315,585,000		$ 313,364,000
Number of identified portfolio segments \| Segment						6
Offering unsecured personal loans, percentage					2.95%
Scenario Forecast [Member]
Significant Accounting Policies [Line Items]
Severance costs and real estate related charges				$ 130,000
Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Number of additional branches planned to close \| Branch			1
Expected annualized expense savings			$ 340,000
Stock repurchase program, number of shares authorized to be repurchased \| shares							801,879
Stock repurchase program, percentage of shares authorized to be repurchased							5.00%
Subsequent Event [Member] \| Subordinated Notes due 2030 [Member] \| Private Placement [Member]
Significant Accounting Policies [Line Items]
Debt instrument, aggregate principal amount	$ 35,000,000.0
Debt instrument, maturity date	Oct. 15, 2030
Debt instrument, payment terms	The Notes have a maturity date of October 15, 2030 and bear interest, payable semi-annually, at the rate of 4.375% per annum, until October 15, 2025. Commencing on that date, the interest rate will reset quarterly to an interest rate per annum equal to the then current three-month secured overnight financing rate (“SOFR”) plus 4.265%, payable quarterly until maturity.
Debt instrument, interest rate	4.375%
Subsequent Event [Member] \| Subordinated Notes due 2030 [Member] \| Private Placement [Member] \| Secured Overnight Financing Rate (“SOFR”) [Member]
Significant Accounting Policies [Line Items]
Debt instrument, percentage of basis spread on variable rate	4.265%
Maximum [Member]
Significant Accounting Policies [Line Items]
Certificate of deposit penalty fees for withdrawals					$ 20,000,000
Offering unsecured personal loans, amount					$ 5,000,000
Offering unsecured personal loans, period					60 months
CARES Act [Member]
Significant Accounting Policies [Line Items]
Estimated amount of relief fund		$ 2,200,000
ASU 2016-13 [Member]
Significant Accounting Policies [Line Items]
Retained earnings						$ (8,700,000)
Increase in the allowance for credit losses on loans						9,600,000
Increase (decrease) in deferred tax assets						3,000,000.0
ASU 2016-13 [Member] \| Held To Maturity Investment Securities [Member]
Significant Accounting Policies [Line Items]
Increase in the allowance for credit losses on loans						14,000
ASU 2016-13 [Member] \| Unfunded Commitments [Member]
Significant Accounting Policies [Line Items]
Increase in the allowance for credit losses on loans						$ 2,100,000