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Loans and Leases and the Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans and Leases by Credit Quality Indicator, Loan Class, and Year of Origination (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 399,898	$ 1,945,030
Fiscal Year Before Latest Fiscal Year	1,807,952	2,771,149
Two Years Before Latest Fiscal Year	2,639,776	2,481,049
Three Years Before Latest Fiscal Year	2,385,677	1,679,428
Four Years Before Latest Fiscal Year	1,638,060	674,605
Prior	2,218,730	1,653,267
Revolving Loans	2,713,577	2,712,450
Revolving Loans Converted to Term Loans	50,167	48,048
Total Loans and Leases	13,853,837	13,965,026
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	282,138	1,294,406
Fiscal Year Before Latest Fiscal Year	1,184,413	1,530,449
Two Years Before Latest Fiscal Year	1,447,633	988,303
Three Years Before Latest Fiscal Year	938,307	624,175
Four Years Before Latest Fiscal Year	609,842	308,049
Prior	791,167	537,667
Revolving Loans	521,706	493,974
Revolving Loans Converted to Term Loans	371	463
Total Loans and Leases	5,775,577	5,777,486
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	117,722	382,033
Fiscal Year Before Latest Fiscal Year	335,593	305,543
Two Years Before Latest Fiscal Year	283,897	238,214
Three Years Before Latest Fiscal Year	211,751	155,200
Four Years Before Latest Fiscal Year	148,868	41,353
Prior	108,387	86,988
Revolving Loans	462,893	442,905
Revolving Loans Converted to Term Loans	371	463
Total Loans and Leases	1,669,482	1,652,699
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	117,709	319,451
Fiscal Year Before Latest Fiscal Year	324,140	294,142
Two Years Before Latest Fiscal Year	277,302	229,286
Three Years Before Latest Fiscal Year	202,960	148,575
Four Years Before Latest Fiscal Year	142,257	40,696
Prior	99,409	77,789
Revolving Loans	397,661	380,524
Revolving Loans Converted to Term Loans	360	450
Total Loans and Leases	1,561,798	1,490,913
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	50,792
Fiscal Year Before Latest Fiscal Year	58	5,555
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	657
Prior	0	0
Revolving Loans	45,184	39,278
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	45,242	96,282
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	13	11,790
Fiscal Year Before Latest Fiscal Year	11,395	5,846
Two Years Before Latest Fiscal Year	6,595	8,928
Three Years Before Latest Fiscal Year	8,791	6,625
Four Years Before Latest Fiscal Year	6,611	0
Prior	8,978	9,199
Revolving Loans	20,048	23,103
Revolving Loans Converted to Term Loans	11	13
Total Loans and Leases	62,442	65,504
Commercial | Paycheck Protection Program
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	2,199
Three Years Before Latest Fiscal Year	1,951	9,170
Four Years Before Latest Fiscal Year	8,226	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	10,177	11,369
Commercial | Paycheck Protection Program | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	2,199
Three Years Before Latest Fiscal Year	1,951	9,170
Four Years Before Latest Fiscal Year	8,226	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	10,177	11,369
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	117,532	824,743
Fiscal Year Before Latest Fiscal Year	754,060	1,062,263
Two Years Before Latest Fiscal Year	1,022,631	682,982
Three Years Before Latest Fiscal Year	680,799	449,883
Four Years Before Latest Fiscal Year	443,627	245,302
Prior	654,736	442,551
Revolving Loans	41,647	41,292
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	3,715,032	3,749,016
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	117,064	788,558
Fiscal Year Before Latest Fiscal Year	683,702	1,043,472
Two Years Before Latest Fiscal Year	1,001,935	679,258
Three Years Before Latest Fiscal Year	661,193	432,896
Four Years Before Latest Fiscal Year	424,648	244,767
Prior	630,355	419,225
Revolving Loans	41,647	41,292
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	3,560,544	3,649,468
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	30,356
Fiscal Year Before Latest Fiscal Year	65,190	18,636
Two Years Before Latest Fiscal Year	1,950	0
Three Years Before Latest Fiscal Year	13,684	3,875
Four Years Before Latest Fiscal Year	0	0
Prior	11,066	9,153
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	91,890	62,020
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	468	5,829
Fiscal Year Before Latest Fiscal Year	5,168	155
Two Years Before Latest Fiscal Year	18,746	3,724
Three Years Before Latest Fiscal Year	5,922	13,112
Four Years Before Latest Fiscal Year	18,979	535
Prior	13,315	14,173
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	62,598	37,528
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	43,335	77,163
Fiscal Year Before Latest Fiscal Year	84,894	149,183
Two Years Before Latest Fiscal Year	129,514	50,996
Three Years Before Latest Fiscal Year	30,921	1,335
Four Years Before Latest Fiscal Year	1,324	16,009
Prior	15,915	0
Revolving Loans	17,166	9,777
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	323,069	304,463
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	43,335	77,163
Fiscal Year Before Latest Fiscal Year	84,894	149,183
Two Years Before Latest Fiscal Year	127,090	50,996
Three Years Before Latest Fiscal Year	30,921	0
Four Years Before Latest Fiscal Year	0	16,009
Prior	15,915	0
Revolving Loans	17,166	9,777
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	319,321	303,128
Commercial | Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	1,335
Four Years Before Latest Fiscal Year	1,324	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	1,324	1,335
Commercial | Construction | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0
Fiscal Year Before Latest Fiscal Year	0
Two Years Before Latest Fiscal Year	2,424
Three Years Before Latest Fiscal Year	0
Four Years Before Latest Fiscal Year	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	2,424
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	3,549	10,467
Fiscal Year Before Latest Fiscal Year	9,866	13,460
Two Years Before Latest Fiscal Year	11,591	13,912
Three Years Before Latest Fiscal Year	12,885	8,587
Four Years Before Latest Fiscal Year	7,797	5,385
Prior	12,129	8,128
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	57,817	59,939
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	3,549	9,867
Fiscal Year Before Latest Fiscal Year	9,292	13,409
Two Years Before Latest Fiscal Year	11,544	13,795
Three Years Before Latest Fiscal Year	12,776	8,493
Four Years Before Latest Fiscal Year	7,710	5,385
Prior	11,674	7,650
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	56,545	58,599
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	600
Fiscal Year Before Latest Fiscal Year	574	51
Two Years Before Latest Fiscal Year	47	117
Three Years Before Latest Fiscal Year	109	94
Four Years Before Latest Fiscal Year	87	0
Prior	455	478
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	1,272	1,340
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	117,760	650,624
Fiscal Year Before Latest Fiscal Year	623,539	1,240,700
Two Years Before Latest Fiscal Year	1,192,143	1,492,746
Three Years Before Latest Fiscal Year	1,447,370	1,055,253
Four Years Before Latest Fiscal Year	1,028,218	366,556
Prior	1,427,563	1,115,600
Revolving Loans	2,191,871	2,218,476
Revolving Loans Converted to Term Loans	49,796	47,585
Total Loans and Leases	8,078,260	8,187,540
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	25,834	297,532
Fiscal Year Before Latest Fiscal Year	289,895	796,979
Two Years Before Latest Fiscal Year	782,706	1,250,343
Three Years Before Latest Fiscal Year	1,230,394	977,377
Four Years Before Latest Fiscal Year	961,293	303,098
Prior	1,326,778	1,058,842
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,616,900	4,684,171
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	25,834	297,532
Fiscal Year Before Latest Fiscal Year	289,895	796,979
Two Years Before Latest Fiscal Year	782,706	1,249,917
Three Years Before Latest Fiscal Year	1,229,968	977,377
Four Years Before Latest Fiscal Year	960,845	303,098
Prior	1,325,079	1,057,267
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,614,327	4,682,170
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	426
Three Years Before Latest Fiscal Year	426	0
Four Years Before Latest Fiscal Year	448	0
Prior	1,699	1,575
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	2,573	2,001
Consumer | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	0
Prior	42	43
Revolving Loans	2,191,108	2,217,199
Revolving Loans Converted to Term Loans	49,796	47,585
Total Loans and Leases	2,240,946	2,264,827
Consumer | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	0
Prior	42	43
Revolving Loans	2,190,048	2,215,970
Revolving Loans Converted to Term Loans	49,092	46,794
Total Loans and Leases	2,239,182	2,262,807
Consumer | Home Equity Loan | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	0
Prior	0	0
Revolving Loans	1,060	1,229
Revolving Loans Converted to Term Loans	704	791
Total Loans and Leases	1,764	2,020
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	58,778	250,464
Fiscal Year Before Latest Fiscal Year	240,075	302,076
Two Years Before Latest Fiscal Year	278,566	149,926
Three Years Before Latest Fiscal Year	135,680	64,780
Four Years Before Latest Fiscal Year	56,293	46,468
Prior	56,462	24,116
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	825,854	837,830
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	58,778	250,380
Fiscal Year Before Latest Fiscal Year	240,008	301,968
Two Years Before Latest Fiscal Year	278,365	149,915
Three Years Before Latest Fiscal Year	135,597	64,734
Four Years Before Latest Fiscal Year	56,266	46,396
Prior	56,324	24,038
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	825,338	837,431
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	84
Fiscal Year Before Latest Fiscal Year	67	108
Two Years Before Latest Fiscal Year	201	11
Three Years Before Latest Fiscal Year	83	46
Four Years Before Latest Fiscal Year	27	72
Prior	138	78
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	516	399
Consumer | Other Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	33,148	102,628
Fiscal Year Before Latest Fiscal Year	93,569	141,645
Two Years Before Latest Fiscal Year	130,871	92,477
Three Years Before Latest Fiscal Year	81,296	13,096
Four Years Before Latest Fiscal Year	10,632	16,990
Prior	44,281	32,599
Revolving Loans	763	1,277
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	394,560	400,712
Consumer | Other Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	33,148	102,563
Fiscal Year Before Latest Fiscal Year	93,435	141,421
Two Years Before Latest Fiscal Year	130,583	92,312
Three Years Before Latest Fiscal Year	81,064	13,074
Four Years Before Latest Fiscal Year	10,593	16,897
Prior	44,101	32,519
Revolving Loans	763	1,277
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	393,687	400,063
Consumer | Other Loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	65
Fiscal Year Before Latest Fiscal Year	134	224
Two Years Before Latest Fiscal Year	288	165
Three Years Before Latest Fiscal Year	232	22
Four Years Before Latest Fiscal Year	39	93
Prior	180	80
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	$ 873	$ 649

X

- Definition

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

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