Deposit Accounts (Tables)

12 Months Ended

Dec. 31, 2023

Deposits Liabilities [Abstract]

Schedule of Components of Deposit Accounts and Weighted Average Interest Rates

Deposit accounts and the end-of-period weighted average interest rates paid consisted of the following at December 31:

	2023						2022
(Dollars in thousands)	Amount		% of Total Deposits		Weighted Average Interest Rate		Amount		% of Total Deposits		Weighted Average Interest Rate
Noninterest-bearing checking	$	4,932,817	32.9	%	—	%	$	6,306,825	36.4	%	—	%
Interest-bearing checking	2,899,621		19.3	%	1.38	%	3,119,850		18.0	%	0.63	%
Money market	4,572,693		30.5	%	2.00	%	4,946,019		28.5	%	0.85	%
Savings	295,749		2.0	%	0.29	%	476,588		2.7	%	0.49	%
Total transaction accounts	12,700,880		84.7	%	1.04	%	14,849,282		85.6	%	0.43	%
Time deposit accounts
$250,000 or less	853,013		5.7	%	4.04	%	525,299		3.0	%	1.35	%
Greater than $250,000	1,441,733		9.6	%	4.56	%	1,977,820		11.4	%	3.37	%
Total time deposit accounts	2,294,746		15.3	%	4.37	%	2,503,119		14.4	%	2.95	%
Total deposits	$	14,995,626	100.0	%	1.55	%	$	17,352,401	100.0	%	0.79	%

Schedule of Aggregate Annual Maturities of Certificates of Deposit Accounts

The aggregate annual maturities of certificates of deposit accounts at December 31, 2023 are as follows:

	2023
(Dollars in thousands)	Amount		Weighted Average Interest Rate
Within 3 months	$	885,862	4.35	%
4 to 6 months	788,137		4.55	%
7 to 12 months	509,187		4.19	%
13 to 24 months	104,887		4.28	%
25 to 36 months	3,105		0.39	%
37 to 60 months	3,568		0.23	%
Over 60 months	—		—	%
Total	$	2,294,746	4.37	%

Schedule of Interest Expense on Deposit Accounts

Interest expense on deposit accounts for the years ended December 31 is summarized as follows:

(Dollars in thousands)	2023		2022		2021
Checking accounts	$	36,520	$	6,351	$	1,270
Money market accounts	69,917		12,735		6,824
Savings	915		391		251
Certificates of deposit accounts	110,095		20,616		3,472
Total	$	217,447	$	40,093	$	11,817