Loans and Leases and Allowance for Credit Losses - Loans individually evaluated for impairment by class of loans (Details) - Loans receivable $ in Thousands	Dec. 31, 2019 USD ($)
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	$ 28,590
Unpaid Principal Balance, With an allowance recorded	37,395
Unpaid Principal Balance	65,985
Recorded Investment
Recorded Investment, With no related allowance recorded	25,107
Recorded Investment, With allowance recorded	36,864
Recorded Investment	61,971
Allowance for Loan Losses Allocated	2,512
Commercial
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	19,315
Unpaid Principal Balance, With an allowance recorded	26,821
Recorded Investment
Recorded Investment, With no related allowance recorded	17,131
Recorded Investment, With allowance recorded	26,387
Allowance for Loan Losses Allocated	1,662
Commercial \| Owner occupied commercial real estate
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	9,527
Unpaid Principal Balance, With an allowance recorded	11,136
Recorded Investment
Recorded Investment, With no related allowance recorded	8,118
Recorded Investment, With allowance recorded	11,115
Allowance for Loan Losses Allocated	816
Commercial \| Income producing commercial real estate
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	5,159
Unpaid Principal Balance, With an allowance recorded	13,591
Recorded Investment
Recorded Investment, With no related allowance recorded	4,956
Recorded Investment, With allowance recorded	13,178
Allowance for Loan Losses Allocated	770
Commercial \| Commercial & industrial
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,144
Unpaid Principal Balance, With an allowance recorded	559
Recorded Investment
Recorded Investment, With no related allowance recorded	890
Recorded Investment, With allowance recorded	559
Allowance for Loan Losses Allocated	21
Commercial \| Construction
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	2,458
Unpaid Principal Balance, With an allowance recorded	1,535
Recorded Investment
Recorded Investment, With no related allowance recorded	2,140
Recorded Investment, With allowance recorded	1,535
Allowance for Loan Losses Allocated	55
Commercial \| Equipment financing
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,027
Unpaid Principal Balance, With an allowance recorded	0
Recorded Investment
Recorded Investment, With no related allowance recorded	1,027
Recorded Investment, With allowance recorded	0
Allowance for Loan Losses Allocated	0
Residential \| Construction
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	731
Unpaid Principal Balance, With an allowance recorded	643
Recorded Investment
Recorded Investment, With no related allowance recorded	626
Recorded Investment, With allowance recorded	630
Allowance for Loan Losses Allocated	47
Residential \| Residential mortgage
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	7,362
Unpaid Principal Balance, With an allowance recorded	9,624
Recorded Investment
Recorded Investment, With no related allowance recorded	6,436
Recorded Investment, With allowance recorded	9,555
Allowance for Loan Losses Allocated	782
Residential \| Home equity lines of credit
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,116
Unpaid Principal Balance, With an allowance recorded	146
Recorded Investment
Recorded Investment, With no related allowance recorded	861
Recorded Investment, With allowance recorded	131
Allowance for Loan Losses Allocated	16
Consumer
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	66
Unpaid Principal Balance, With an allowance recorded	161
Recorded Investment
Recorded Investment, With no related allowance recorded	53
Recorded Investment, With allowance recorded	161
Allowance for Loan Losses Allocated	$ 5

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524

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-Publisher FASB
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