Loans, net and allowance for loan losses - Major Classification of Loans Portfolio Summarized by Credit Quality (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable
Loans	$ 2,236,826	$ 2,177,982
Decrease in charge offs due to a partial write down of a non-accrual commercial relationship	1,500
Decrease in non accrual loan due to principal payment	500
Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	671,977	679,286
Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	1,203,958	1,137,990
Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	281,500	277,414
Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	79,391	83,292
Pass
Accounts, Notes, Loans and Financing Receivable
Loans	2,196,080	2,125,800
Pass \| Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	655,924	660,559
Pass \| Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	1,182,725	1,107,699
Pass \| Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	278,115	274,327
Pass \| Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	79,316	83,215
Special Mention
Accounts, Notes, Loans and Financing Receivable
Loans	27,274	31,966
Special Mention \| Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	13,752	14,305
Special Mention \| Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	12,909	17,517
Decrease in loan due to upgrading credit line	5,300
Special Mention \| Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	613	144
Substandard
Accounts, Notes, Loans and Financing Receivable
Loans	13,472	20,216
Substandard \| Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	2,301	4,422
Increase (decrease) in loans and leases receivable	1,500
Decrease in loan due to principal reduction	500
Substandard \| Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	$ 8,324	12,774
Security provided by SBA	75.00%
Substandard \| Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	$ 2,772	2,943
Substandard \| Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	$ 75	$ 77

The amount of increase (decrease) in charge offs due to a partial write down of a non-accrual commercial relationship.

No definition available.

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- Definition

The amount of decrease in loan due to principal reduction in outstanding credit relating to financing receivables.

+ References

No definition available.

+ Details

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- Definition

The amount of decrease in loan due to upgrading a credit line to credit enhancement and satisfactory repayment history of financing receivables.

+ References

No definition available.

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- Definition

The amount of decrease in non accrual loan due to principal payment on existing commercial credit relating to financing receivables.

+ References

No definition available.

+ Details

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- Definition

The percentage of security provided by the SBA guarantee to the financing receivables.

+ References

No definition available.

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- Definition

The amount of increase (decrease) in loans and leases receivable due to relationship experiencing cash flow and capital issues.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ 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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