Loans - Allowance for Credit Losses by Portfolio Type (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Allowance for loan losses
Balance, beginning of period	$ 74,459	$ 50,509	$ 65,917	$ 47,547
Provision (benefit) for credit losses	3,620	5,000	6,960	8,700
Loans charged off	(797)	(1,083)	(920)	(2,112)
Recoveries	80	1,651	149	1,942
Balance, end of period	77,362	56,077	77,362	56,077
Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			5,256
Commercial and Industrial
Allowance for loan losses
Balance, beginning of period	28,545	33,009	40,785	31,622
Provision (benefit) for credit losses	5,343	(303)	6,689	1,910
Loans charged off	(729)	(947)	(788)	(1,950)
Recoveries	38	1,546	94	1,723
Balance, end of period	33,197	33,305	33,197	33,305
Commercial and Industrial \| Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			(13,583)
Commercial Real Estate
Allowance for loan losses
Balance, beginning of period	24,186	14,566	19,754	13,198
Provision (benefit) for credit losses	(2,588)	3,784	(2,026)	5,152
Loans charged off	0	0	0	0
Recoveries	0	1	3	1
Balance, end of period	21,598	18,351	21,598	18,351
Commercial Real Estate \| Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			3,867
Residential real estate
Allowance for loan losses
Balance, beginning of period	14,165	997	2,963	836
Provision (benefit) for credit losses	773	1,422	1,719	1,485
Loans charged off	0	(98)	0	(98)
Recoveries	21	97	21	195
Balance, end of period	14,959	2,418	14,959	2,418
Residential real estate \| Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			10,256
Public finance
Allowance for loan losses
Balance, beginning of period	5,549	1,611	1,664	1,544
Provision (benefit) for credit losses	(43)	(73)	(48)	(6)
Loans charged off	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	5,506	1,538	5,506	1,538
Public finance \| Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			3,890
Consumer
Allowance for loan losses
Balance, beginning of period	676	233	352	235
Provision (benefit) for credit losses	225	116	354	124
Loans charged off	(68)	(38)	(132)	(64)
Recoveries	21	7	31	23
Balance, end of period	854	318	854	318
Consumer \| Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			249
Other
Allowance for loan losses
Balance, beginning of period	1,338	93	399	112
Provision (benefit) for credit losses	(90)	54	272	35
Loans charged off	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	$ 1,248	$ 147	1,248	$ 147
Other \| Impact of adopting ASC 326
Allowance for loan losses
Balance, beginning of period			$ 577

Financing Receivable, Credit Loss, Expense (Reversal), Excluding For Unfunded Commitments

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
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- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

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-Topic 326
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