Allowance for Credit Losses - Allowances by Loan Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for Credit Losses
Balances at beginning of the period	$ 69,899	$ 110,902	$ 52,223
Reversal of (provision for) credit losses	13,945	(16,500)	88,620
Loans charged-off	(22,106)
Recoveries	3,088	3,277	920
Balances at end of the period	83,500	69,899	110,902
Allowance for loan losses by impairment methodology, Individually evaluated		11,791	29,948
Allowance for loan losses by impairment methodology, Collectively evaluated		58,108	80,954
Allowance for loan losses	83,500	69,899	110,902
Total Loans, Net of Unearned Income	6,857,194	5,409,440
Cumulative effect of adoption of accounting principle, net of tax
Allowance for Credit Losses
Balances at beginning of the period	18,674
Balances at end of the period		18,674
Allowance for loan losses		18,674
Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated		52,704	87,741
Investment in loans, net of unearned income, Collectively evaluated		5,356,736	5,754,596
Total Loans, Net of Unearned Income		5,409,440	5,842,337
Domestic
Allowance for Credit Losses
Loans charged-off		(27,780)	(30,558)
International
Allowance for Credit Losses
Loans charged-off		0	(303)
Total Loans, Net of Unearned Income	99,200	99,600
Real estate loans
Allowance for Credit Losses
Balances at beginning of the period	17,952	50,227	25,040
Reversal of (provision for) credit losses	(6,328)	(21,338)	25,187
Loans charged-off	(3,852)
Recoveries	47	125	0
Balances at end of the period	25,237	17,952	50,227
Allowance for loan losses by impairment methodology, Individually evaluated		546	3,175
Allowance for loan losses by impairment methodology, Collectively evaluated		17,406	47,052
Allowance for loan losses	25,237	17,952	50,227
Total Loans, Net of Unearned Income	4,858,208	4,006,392
Real estate loans | Cumulative effect of adoption of accounting principle, net of tax
Allowance for Credit Losses
Balances at beginning of the period	17,418
Balances at end of the period		17,418
Allowance for loan losses		17,418
Real estate loans | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated		7,285	19,560
Investment in loans, net of unearned income, Collectively evaluated		2,346,923	2,796,092
Total Loans, Net of Unearned Income		2,354,208	2,815,652
Real estate loans | Domestic
Allowance for Credit Losses
Loans charged-off		(11,062)	0
Real estate loans | International
Allowance for Credit Losses
Loans charged-off		0	0
Commercial loans
Allowance for Credit Losses
Balances at beginning of the period	38,979	48,130	22,482
Reversal of (provision for) credit losses	1,619	1,463	55,197
Loans charged-off	(9,114)
Recoveries	2,685	2,613	443
Balances at end of the period	25,888	38,979	48,130
Allowance for loan losses by impairment methodology, Individually evaluated		10,462	25,394
Allowance for loan losses by impairment methodology, Collectively evaluated		28,517	22,736
Allowance for loan losses	25,888	38,979	48,130
Total Loans, Net of Unearned Income	1,381,234	965,673
Commercial loans | Cumulative effect of adoption of accounting principle, net of tax
Allowance for Credit Losses
Balances at beginning of the period	(8,281)
Balances at end of the period		(8,281)
Allowance for loan losses		(8,281)
Commercial loans | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated		39,785	60,130
Investment in loans, net of unearned income, Collectively evaluated		2,075,338	2,210,601
Total Loans, Net of Unearned Income		2,115,123	2,270,731
Commercial loans | Domestic
Allowance for Credit Losses
Loans charged-off		(13,227)	(29,958)
Commercial loans | International
Allowance for Credit Losses
Loans charged-off		0	(34)
Loans to financial institutions and acceptances
Allowance for Credit Losses
Balances at beginning of the period	42	1	42
Reversal of (provision for) credit losses	0	41	(41)
Loans charged-off	0
Recoveries	0	0	0
Balances at end of the period	0	42	1
Allowance for loan losses by impairment methodology, Individually evaluated		0	0
Allowance for loan losses by impairment methodology, Collectively evaluated		42	1
Allowance for loan losses	0	42	1
Total Loans, Net of Unearned Income	13,292	13,710
Loans to financial institutions and acceptances | Cumulative effect of adoption of accounting principle, net of tax
Allowance for Credit Losses
Balances at beginning of the period	(42)
Balances at end of the period		(42)
Allowance for loan losses		(42)
Loans to financial institutions and acceptances | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated		0	0
Investment in loans, net of unearned income, Collectively evaluated		14,127	17,574
Total Loans, Net of Unearned Income		14,127	17,574
Loans to financial institutions and acceptances | Domestic
Allowance for Credit Losses
Loans charged-off		0	0
Loans to financial institutions and acceptances | International
Allowance for Credit Losses
Loans charged-off		0	0
Consumer loans and overdrafts
Allowance for Credit Losses
Balances at beginning of the period	12,926	12,544	4,659
Reversal of (provision for) credit losses	18,654	3,334	8,277
Loans charged-off	(9,140)
Recoveries	356	539	477
Balances at end of the period	32,375	12,926	12,544
Allowance for loan losses by impairment methodology, Individually evaluated		783	1,379
Allowance for loan losses by impairment methodology, Collectively evaluated		12,143	11,165
Allowance for loan losses	32,375	12,926	12,544
Total Loans, Net of Unearned Income	604,460	423,665	247,120
Consumer loans and overdrafts | Cumulative effect of adoption of accounting principle, net of tax
Allowance for Credit Losses
Balances at beginning of the period	$ 9,579
Balances at end of the period		9,579
Allowance for loan losses		9,579
Consumer loans and overdrafts | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated		5,634	8,051
Investment in loans, net of unearned income, Collectively evaluated		920,348	730,329
Total Loans, Net of Unearned Income		925,982	738,380
Consumer loans and overdrafts | Domestic
Allowance for Credit Losses
Loans charged-off		(3,491)	(600)
Consumer loans and overdrafts | International
Allowance for Credit Losses
Loans charged-off		$ 0	$ (269)