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Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Transfers and Servicing [Abstract]
Outstanding principal balance of loans serviced for others	$ 318,459	$ 266,173
Net gain from sale of loans	3,308	651	$ 490
Mortgage servicing rights capitalized	1,160	422
Amortization of mortgage servicing rights	352	231
Fair value of mortgage servicing rights	$ 1,985	2,089
Moving average of weekly prepayment data (in months)	3 months
Anticipated loan prepayment rate of servicing assets (in hundredths)	20.76%
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate adjustment factor (in hundredths)	9.00%
Summary of mortgage servicing rights [Abstract]
Mortgage servicing rights	$ 7,299	6,140
Accumulated amortization	(4,985)	(4,594)
Amortized cost	2,314	1,546
Impairment reserve	(358)	0
Mortgage servicing rights, net	$ 1,956	$ 1,546

X

- Definition

The cumulative amount of amortization for mortgage servicing rights that has been recognized in the income statement.

+ References

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- Definition

Gross amount, as of the balance sheet date, of mortgage servicing rights.

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Net amount, as of the balance sheet date, of mortgage servicing rights.

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- Definition

The moving average period of weekly prepayment data used as assumption in evaluating the carrying value of mortgage servicing rights.

+ References

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Net gain from the sale of loans held for sale.

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Dollar amount of principal outstanding on loans being serviced for others at the balance sheet date.

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- Definition

The amount of rate spread added to the ten-year US Treasury rate to derive the discount rate used in the fair value calculation for the loan servicing portfolio.

+ References

No definition available.

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- Definition

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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Amount of other-than-temporary impairment (OTTI) applied to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

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Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

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