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Allowance for Loan Losses - Residential and consumer portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	$ 996,029	$ 972,095
Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	297,321	266,352
Real estate-residential mortgage
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	281,711	249,989
Real estate-residential mortgage | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	281,711	249,989
Consumer.
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	15,610	16,363
Consumer. | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	15,610	16,363
Performing | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	296,416	263,876
Performing | Real estate-residential mortgage | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	280,806	247,520
Performing | Consumer. | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	15,610	16,356
Non-performing | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	905	2,476
Non-performing | Real estate-residential mortgage | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	905	2,469
Non-performing | Consumer. | Consumer
Performing and non-performing outstanding balances of the residential and consumer portfolios
Loan portfolio	$ 0	$ 7

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- Definition

Loan portfolio classified as performance and nonperformance.

+ References

No definition available.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524

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