Loans, net and allowance for loan losses - Major Classification of Loans Portfolio Summarized by Credit Quality (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable
Loans	$ 2,179,534	$ 2,177,982
Decrease in charge offs due to a partial write down of a non-accrual commercial relationship	1,500
Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	677,090	679,286
Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	1,150,567	1,137,990
Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	$ 273,226	277,414
Number of loans added to loans greater than 90 days and accruing \| loan	1
Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	$ 78,651	83,292
Pass
Accounts, Notes, Loans and Financing Receivable
Loans	2,132,285	2,125,800
Pass \| Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	660,558	660,559
Pass \| Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	1,123,315	1,107,699
Pass \| Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	269,856	274,327
Pass \| Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	78,556	83,215
Special Mention
Accounts, Notes, Loans and Financing Receivable
Loans	31,962	31,966
Special Mention \| Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	13,728	14,305
Special Mention \| Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	17,615	17,517
Special Mention \| Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	619	144
Substandard
Accounts, Notes, Loans and Financing Receivable
Loans	15,287	20,216
Substandard \| Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	2,804	4,422
Increase (decrease) in loans and leases receivable	1,500
Substandard \| Real estate Commercial
Accounts, Notes, Loans and Financing Receivable
Loans	9,637	12,774
Substandard \| Real estate Residential
Accounts, Notes, Loans and Financing Receivable
Loans	2,751	2,943
Substandard \| Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	$ 95	$ 77

The number of loans added to loans greater than 90 days and accruing.

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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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.

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- Definition

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+ 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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