Consolidated Statements of Comprehensive Income (Loss) - Unaudited - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 47,574	$ 58,650	$ 101,295	$ 135,411
Unrealized gains (losses) on available for sale debt securities:
Unrealized gains (losses) arising during the period	(17,401)	(88,224)	(9,131)	(167,082)
Income tax effect	4,420	22,938	2,319	43,441
Reclassification adjustments for (gains) losses included in net income	0	3,991	0	5,054
Income tax effect	0	(1,038)	0	(1,314)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity	1,449	0	2,321	0
Income tax effect	(368)	0	(589)	0
Net unrealized gains (losses) on available for sale debt securities	(11,900)	(62,333)	(5,080)	(119,901)
Other comprehensive income (loss), net of income tax effect	(11,900)	(62,333)	(5,080)	(119,901)
Comprehensive income (loss)	$ 35,674	$ (3,683)	$ 96,215	$ 15,510