Loans and Allowance for Credit Losses on Loans - Nonaccruals (Details) - USD ($)	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non accrual including PCI Loans	$ 19,497,000	$ 15,395,000
Nonaccrual with no ACL including PCI	16,958,000	11,749,000
Interest on nonacccrual loans	152,000
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,418,000	144,000
Nonaccrual with no ACL	2,279,000
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	187,000	329,000
Nonaccrual with no ACL	69,000	70,000
Commercial real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,750,000	1,695,000
Nonaccrual with no ACL	1,750,000	1,590,000
Commercial real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	7,436,000	5,180,000
Nonaccrual with no ACL	7,357,000	2,366,000
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,245,000	93,000
Nonaccrual with no ACL	50,000	93,000
Real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	859,000	788,000
Nonaccrual with no ACL	859,000	788,000
Real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	3,406,000	2,572,000
Nonaccrual with no ACL	3,406,000	2,475,000
Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	69,000	68,000
Nonaccrual with no ACL	69,000	68,000
HELOC
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,004,000	1,364,000
Nonaccrual with no ACL	1,004,000	1,154,000
HELOC - Purchased
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	114,000	180,000
Nonaccrual with no ACL	114,000	180,000
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	9,000	19,000
Nonaccrual with no ACL	1,000	2,000
PCI
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual		2,963,000
Nonaccrual with no ACL		2,963,000
Non-PCI
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	19,497,000	12,432,000
Nonaccrual with no ACL	$ 16,958,000	$ 8,786,000

Amount of financing receivable on nonaccrual status including purchased credit impaired loans.

No definition available.

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- Definition

Amount of financing receivable including purchased credit impaired loans on nonaccrual status with no allowance for credit loss.

+ References

No definition available.

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- Definition

Amount of financing receivable on nonaccrual status with no allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447

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- Definition

Amount of financing receivable on nonaccrual status.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447

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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

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18794-111554

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