Loans Loans - Non-Accrual Loans, Segregated by Class of Loans and Year of Origination (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 67,781	$ 37,833
Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,248
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	8
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	517
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	19,180
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	8,259
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,912
Financing Receivable, Revolving	21,578
Financing Receivable, Revolving, Converted to Term Loan	1,079
Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,145,305
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	941,744
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	561,695
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	420,405
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	211,653
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	258,011
Financing Receivable, Revolving	2,122,788
Non-accrual loans	22,217	18,130
Commercial Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	221
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	754
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,957
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,172
Financing Receivable, Revolving	16,746
Financing Receivable, Revolving, Converted to Term Loan	367
Commercial and Industrial Total Energy Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	311,743
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	70,287
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	83,419
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4,469
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	7,643
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	6,089
Financing Receivable, Revolving	466,945
Non-accrual loans	16,712	15,224
Commercial and Industrial Total Energy Loans [Member] \| Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	10,324
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	59
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,349
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2
Financing Receivable, Revolving	4,832
Financing Receivable, Revolving, Converted to Term Loan	146
Commercial Real Estate Buildings Land And Other Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	718,176
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,786,515
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,488,642
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	923,237
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	644,069
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,101,800
Financing Receivable, Revolving	155,033
Non-accrual loans	25,682	3,552
Commercial Real Estate Buildings Land And Other Loans [Member] \| Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,924
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	8
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	296
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	18,328
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,483
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,643
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Construction Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	299,297
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	570,101
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	352,871
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	51,647
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	945
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,666
Financing Receivable, Revolving	191,544
Non-accrual loans	0	0
Construction Loans [Member] \| Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Total consumer real estate loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	3,170	927
Total consumer real estate loans [Member] \| Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	39
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,470
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	95
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	566
Consumer Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	0	$ 0
Consumer Loan [Member] \| Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	$ 0

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Paragraph 6
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

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