Loans and Allowance for Credit Losses - Rollforward of Allowance for Credit/Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 196,711	$ 218,583	$ 101,788
Charge-offs	(44,305)	(55,663)	(28,689)
Recoveries	4,437	10,791	8,564
Provision	37,400	23,000	127,890
Ending balance - ACL	194,243	196,711	218,583
Beginning balance - ACL on off-balance sheet	2,588	5,588	2,978
Provision	500	(3,000)	2,610
Ending balance - ACL on off-balance sheet	3,088	2,588	5,588
Adjusted beginning balance			110,818
ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			9,030
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	123,732	122,700	63,313
Charge-offs	(37,269)	(13,981)	(8,587)
Recoveries	1,550	6,694	6,473
Provision	48,724	8,319	57,824
Ending balance - ACL	136,737	123,732	122,700
Beginning balance - ACL on off-balance sheet	1,739	3,859	2,263
Provision	439	(2,120)	1,596
Ending balance - ACL on off-balance sheet	2,178	1,739	3,859
Adjusted beginning balance			66,990
Commercial and Industrial Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			3,677
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	6,075	15,786	15,739
Charge-offs	(6,150)	(6,011)	(7,326)
Recoveries	1,812	1,967	1,618
Provision	5,129	(5,667)	4,841
Ending balance - ACL	6,866	6,075	15,786
Adjusted beginning balance			16,653
Credit Cards Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			914
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	1,738	5,219	2,545
Charge-offs		(31,945)
Recoveries	433	187
Provision	(2,171)	28,277	2,526
Ending balance - ACL		1,738	5,219
Beginning balance - ACL on off-balance sheet	160	287	53
Provision	26	(127)	234
Ending balance - ACL on off-balance sheet	186	160	287
Adjusted beginning balance			2,693
Specialty Lending Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			148
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	2,195	2,271	1,074
Charge-offs		(8)	(11)
Recoveries		18	6
Provision	26	(86)	1,140
Ending balance - ACL	2,221	2,195	2,271
Beginning balance - ACL on off-balance sheet	15	414	211
Provision	47	(399)	203
Ending balance - ACL on off-balance sheet	62	15	414
Adjusted beginning balance			1,136
Leases and Other Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			62
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	56,265	61,931	15,951
Charge-offs	(29)	(1,198)	(11,939)
Recoveries	385	1,560	91
Provision	(17,251)	(6,028)	56,902
Ending balance - ACL	39,370	56,265	61,931
Beginning balance - ACL on off-balance sheet	480	447	257
Provision	(62)	33	190
Ending balance - ACL on off-balance sheet	418	480	447
Adjusted beginning balance			16,877
Commercial Real Estate Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			926
Total - Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	194,771	215,973	101,788
Charge-offs	(44,305)	(55,663)	(28,689)
Recoveries	4,437	10,791	8,564
Provision	36,933	23,670	128,400
Ending balance - ACL	191,836	194,771	215,973
Beginning balance - ACL on off-balance sheet	2,500	5,533	2,908
Provision	481	(3,033)	2,625
Ending balance - ACL on off-balance sheet	2,981	2,500	5,533
Adjusted beginning balance			107,698
Total - Loans [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			5,910
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	3,921	6,586	2,623
Charge-offs	(57)	(96)	(219)
Recoveries	131	142	69
Provision	2,153	(2,711)	3,961
Ending balance - ACL	6,148	3,921	6,586
Beginning balance - ACL on off-balance sheet	106	145	102
Provision	18	(39)	43
Ending balance - ACL on off-balance sheet	124	106	145
Adjusted beginning balance			2,775
Consumer Real Estate Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			152
HTM [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	1,940	2,610
Provision	467	(670)	(510)
Ending balance - ACL	2,407	1,940	2,610
Beginning balance - ACL on off-balance sheet	88	55	70
Provision	19	33	(15)
Ending balance - ACL on off-balance sheet	107	88	55
Adjusted beginning balance			3,120
HTM [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			3,120
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	845	1,480	543
Charge-offs	(800)	(2,424)	(607)
Recoveries	126	223	307
Provision	323	1,566	1,206
Ending balance - ACL	494	845	1,480
Beginning balance - ACL on off-balance sheet		381	22
Provision	13	$ (381)	359
Ending balance - ACL on off-balance sheet	$ 13		381
Adjusted beginning balance			574
Consumer Portfolio [Member] | ASU 2016-13 Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment			$ 31