Loans - Narrative (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) loan	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) loan
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 4,966,977		$ 4,763,127
Loan balance, before allowance for credit loss and fee	5,009,686		4,805,596
Deferred loan fees	20,108		16,984
Loans, including fees	60,436	$ 56,258
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	551,077		526,327
Payment Protection Program (PPP)
Loans and Leases Receivable Disclosure [Line Items]
Loan balance, before allowance for credit loss and fee	614,826
Payment Protection Program (PPP) \| Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 370,274		$ 333,982
Number of loans (in loans) \| loan	2,484		2,300
Number of loans less than $50,000 (in loans) \| loan	1,303
Allowance for credit loss, balance less than $50,000	$ 26,895
Deferred loan fees	23,585
Deferred loan costs	1,163
Deferred fee accretion	9,430	7,212
Loans, including fees	$ 5,232	$ 0

Financing Receivable, Before Allowance For Credit Loss, Balance Less Than $50,000

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- Definition

Financing Receivable, Deferred Loan Costs

+ References

No definition available.

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- Definition

Financing Receivable, Number of Loans

+ References

No definition available.

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- Definition

Financing Receivable, Number Of Loans, Balance Less Than $50,000

+ References

No definition available.

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- Definition

Financing Receivable, Unamortized Loan Fee (Cost)

+ References

No definition available.

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- Definition

Amount, before allowance for credit loss and fee, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Amount of fee received for commitment to originate or purchase financing receivable. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10095-111533

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524

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- Definition

The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

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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 for credit loss, of financing receivable.

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