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Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance $ 121,622 $ 185,827 $ 52,429
Allowance for credit losses - loan commitments, beginning balance 7,775 9,514 874
Total beginning allowance for credit losses - loans and loan commitments 129,397 195,341 53,303
Provision for loan losses (2,208) (62,477) 101,960
Provision for loan commitments 593 (1,739) 5,685
Total provision for credit losses - loans and loan commitments (1,615) (64,216) 107,645
Charge-offs (7,892) (10,136) (12,535)
Recoveries 6,268 8,408 5,486
Net recoveries (charge-offs) (1,624) (1,728) (7,049)
Allowance for credit losses - loans, ending balance 117,790 121,622 185,827
Allowance for credit losses - loan commitments, ending balance 8,368 7,775 9,514
Total ending allowance for credit losses - loans and loan commitments 126,158 129,397 195,341
Commercial and Industrial [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 26,875 37,850 14,116
Allowance for credit losses - loan commitments, beginning balance 1,497 1,275 311
Total beginning allowance for credit losses - loans and loan commitments 28,372 39,125 14,427
Provision for loan losses 4,736 (10,749) 3,918
Provision for loan commitments (1,497) 222 693
Total provision for credit losses - loans and loan commitments 3,239 (10,527) 4,611
Charge-offs (1,068) (2,521) (3,727)
Recoveries 997 2,295 1,457
Net recoveries (charge-offs) (71) (226) (2,270)
Allowance for credit losses - loans, ending balance 31,540 26,875 37,850
Allowance for credit losses - loan commitments, ending balance   1,497 1,275
Total ending allowance for credit losses - loans and loan commitments 31,540 28,372 39,125
Deposit Overdraft [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 2,220 639 1,387
Total beginning allowance for credit losses - loans and loan commitments 2,220 639 1,387
Provision for loan losses 333 2,694 (376)
Total provision for credit losses - loans and loan commitments 333 2,694 (376)
Charge-offs (1,622) (1,486) (1,011)
Recoveries 354 373 426
Net recoveries (charge-offs) (1,268) (1,113) (585)
Allowance for credit losses - loans, ending balance 1,285 2,220 639
Total ending allowance for credit losses - loans and loan commitments 1,285 2,220 639
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 7,310 10,841 4,949
Allowance for credit losses - loan commitments, beginning balance 4,180 6,508 235
Total beginning allowance for credit losses - loans and loan commitments 11,490 17,349 5,184
Provision for loan losses (625) (3,698) 6,929
Provision for loan commitments 1,845 (2,328) 3,671
Total provision for credit losses - loans and loan commitments 1,220 (6,026) 10,600
Charge-offs (73) (22) (51)
Recoveries 125 189 92
Net recoveries (charge-offs) 52 167 41
Allowance for credit losses - loans, ending balance 6,737 7,310 10,841
Allowance for credit losses - loan commitments, ending balance 6,025 4,180 6,508
Total ending allowance for credit losses - loans and loan commitments 12,762 11,490 17,349
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 65,355 110,652 20,293
Allowance for credit losses - loan commitments, beginning balance 201 712 22
Total beginning allowance for credit losses - loans and loan commitments 65,556 111,364 20,315
Provision for loan losses (12,939) (44,831) 78,210
Provision for loan commitments (201) (511) 712
Total provision for credit losses - loans and loan commitments (13,140) (45,342) 78,922
Charge-offs (795) (1,825) (1,747)
Recoveries 1,038 1,359 796
Net recoveries (charge-offs) 243 (466) (951)
Allowance for credit losses - loans, ending balance 52,659 65,355 110,652
Allowance for credit losses - loan commitments, ending balance   201 712
Total ending allowance for credit losses - loans and loan commitments 52,659 65,556 111,364
Residential Real Estate [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 15,401 17,851 4,311
Allowance for credit losses - loan commitments, beginning balance 1,576 955 15
Total beginning allowance for credit losses - loans and loan commitments 16,977 18,806 4,326
Provision for loan losses 2,717 (2,708) 9,065
Provision for loan commitments 639 621 560
Total provision for credit losses - loans and loan commitments 3,356 (2,087) 9,625
Charge-offs (500) (873) (1,415)
Recoveries 590 1,131 640
Net recoveries (charge-offs) 90 258 (775)
Allowance for credit losses - loans, ending balance 18,208 15,401 17,851
Allowance for credit losses - loan commitments, ending balance 2,215 1,576 955
Total ending allowance for credit losses - loans and loan commitments 20,423 16,977 18,806
Consumer [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 3,737 6,507 2,951
Allowance for credit losses - loan commitments, beginning balance 272 19 41
Total beginning allowance for credit losses - loans and loan commitments 4,009 6,526 2,992
Provision for loan losses 44 (2,286) 2,980
Provision for loan commitments (272) 253 19
Total provision for credit losses - loans and loan commitments (228) (2,033) 2,999
Charge-offs (3,476) (2,995) (3,615)
Recoveries 2,822 2,511 1,574
Net recoveries (charge-offs) (654) (484) (2,041)
Allowance for credit losses - loans, ending balance 3,127 3,737 6,507
Allowance for credit losses - loan commitments, ending balance   272 19
Total ending allowance for credit losses - loans and loan commitments 3,127 4,009 6,526
ASU 2016-13 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     41,442
ASU 2016-13 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial and Industrial [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     22,357
ASU 2016-13 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Deposit Overdraft [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     213
ASU 2016-13 [Member] | Commercial Real Estate [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial Real Estate - Land and Construction [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     1,524
ASU 2016-13 [Member] | Commercial Real Estate [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Commercial Real Estate - Improved Property [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     13,078
ASU 2016-13 [Member] | Residential Real Estate [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     5,630
ASU 2016-13 [Member] | Consumer [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     2,576
Home Equity [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance for credit losses - loans, beginning balance 724 1,487 4,422
Allowance for credit losses - loan commitments, beginning balance 49 45 250
Total beginning allowance for credit losses - loans and loan commitments 773 1,532 4,672
Provision for loan losses 3,526 (899) 1,234
Provision for loan commitments 79 4 30
Total provision for credit losses - loans and loan commitments 3,605 (895) 1,264
Charge-offs (358) (414) (969)
Recoveries 342 550 501
Net recoveries (charge-offs) (16) 136 (468)
Allowance for credit losses - loans, ending balance 4,234 724 1,487
Allowance for credit losses - loan commitments, ending balance 128 49 45
Total ending allowance for credit losses - loans and loan commitments $ 4,362 $ 773 1,532
Home Equity [Member] | ASU 2016-13 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision for loan losses     $ (3,936)