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Summary of significant accounting policies (Details) $ in Thousands	1 Months Ended		2 Months Ended	3 Months Ended
	May 06, 2020 USD ($) item	Apr. 17, 2020 USD ($) item	May 06, 2020 USD ($) customer	Mar. 31, 2020 USD ($) Office	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Number of full-service community banking offices | Office				29
Commercial loan and commercial real estate portfolio deemed non-life sustaining				$ 1,200,000
Commercial loan and commercial real estate portfolio deemed non-life systaining percentage				73.00%
Provision for loan losses				$ 3,500	$ 1,050
Loan receivable balances where payment deferrals were granted	$ 313,600		$ 313,600
PPP loan applications number | item	455	836
PPP total loan amount	$ 24,000	$ 177,900	24,000
PPP average loan amount	53	$ 213	$ 53
Goodwill				$ 63,370		$ 63,400	$ 63,370
Commercial Real Estate
Maximum loan receivable deferred period			4 months
Number of business loans with payment deferrals granted | customer			390
Consumer Loan
Maximum loan receivable deferred period			6 months
Number of business loans with payment deferrals granted | customer			451
Forecast
SBA processing fees	$ 6,600

X

- Definition

The amount of the commercial loan and commercial real estate portfolio that was deemed as non-life sustaining and subject to shutdown.

+ References

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- Definition

The percentage of the commercial loan and commercial real estate portfolio that was deemed as non-life sustaining and subject to shutdown.

+ References

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- Definition

The value of loan receivable balances where payment deferrals have been granted.

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- Definition

The number of business relationships where payment deferrals were granted.

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The maximum loan receivable Payment deferred period.

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- Definition

The number of full-service community banking offices.

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- Definition

The average Paycheck Protection Program loan receivable amount.

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- Definition

The amount of Paycheck Protection Program loans processed.

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The number of applications processed for the Paycheck Protection Program.

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- Definition

The amount of Small Business Administration processing fee revenue.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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Amount of expense related to estimated loss from loan and lease transactions.

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