Allowance For Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	$ 28,009		$ 31,878
Total accruing impaired loans	12,200		17,100
Impaired non-accrual loans	15,800		14,800
Unpaid contractual principal balance	31,533		35,333
Recorded investment with no allowance	23,443		29,521
Recorded investment with allowance	4,566		2,357
Related allowance	2,448		1,049
Average recorded investment	29,499	$ 30,872
Interest income recognized	102	261
Commercial real estate
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	14,166		17,515
Unpaid contractual principal balance	15,257		18,537
Recorded investment with no allowance	13,783		17,129
Recorded investment with allowance	383		386
Related allowance	29		31
Average recorded investment	15,273	15,803
Interest income recognized	72	120
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	6,901		9,332
Unpaid contractual principal balance	9,015		11,455
Recorded investment with no allowance	5,264		7,405
Recorded investment with allowance	1,637		1,927
Related allowance	908		974
Average recorded investment	7,808	11,919
Interest income recognized	28	115
Commercial construction
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	5,304		3,347
Unpaid contractual principal balance	5,330		3,359
Recorded investment with no allowance	2,796		3,347
Recorded investment with allowance	2,508		0
Related allowance	1,473		0
Average recorded investment	4,755	1,734
Interest income recognized	0	25
Residential mortgages
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	1,206		1,229
Unpaid contractual principal balance	1,317		1,331
Recorded investment with no allowance	1,206		1,229
Recorded investment with allowance	0		0
Related allowance	0		0
Average recorded investment	1,220	890
Interest income recognized	2	1
Home equity
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	394		411
Unpaid contractual principal balance	575		607
Recorded investment with no allowance	394		411
Recorded investment with allowance	0		0
Related allowance	0		0
Average recorded investment	402	507
Interest income recognized	0	0
Consumer
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	38		44
Unpaid contractual principal balance	39		44
Recorded investment with no allowance	0		0
Recorded investment with allowance	38		44
Related allowance	38		$ 44
Average recorded investment	41	19
Interest income recognized	$ 0	$ 0

Financing Receivable, Recorded Investment, Impaired and Nonaccrual Status

No definition available.

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- Definition

Reflects the carrying amount of impaired loans on which interest is continuing to be earned or accrued.

+ References

No definition available.

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+ References

No definition available.

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- Definition

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

+ 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
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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+ References

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-Publisher FASB
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-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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Amount of allowance for credit losses related to recorded investment.

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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