CONDENSED HOLDING COMPANY ONLY FINANCIAL STATEMENTS - CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed financial information
Net interest loss	$ 316,571	$ 379,863	$ 357,609
Non-interest income	36,206	38,156	42,068
Non-interest expense	(213,128)	(200,730)	(245,299)
Income tax credit	(40,785)	(59,359)	(44,170)
Net income	96,094	152,556	103,996
Parent Company
Condensed financial information
Net interest loss	(9,942)	(10,394)	(8,427)
Dividends received from Bank	60,000	95,000	20,000
Non-interest income			136
Non-interest expense	(1,066)	(1,720)	(4,361)
Income before income taxes and equity in undistributed earnings of direct subsidiaries	48,992	82,886	7,348
Income tax credit	7,822	4,001	4,051
Income before equity in undistributed earnings of direct subsidiaries	56,814	86,887	11,399
Equity in undistributed earnings of subsidiaries	39,280	65,669	92,597
Net income	$ 96,094	$ 152,556	$ 103,996