Consolidated Statements of Comprehensive Income - (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Income		$ 45,744	$ 43,469
Other comprehensive income, net of tax:
Unrealized loss on securities available-for-sale		(58,406)	(17,617)
Reclassification adjustment for loss (gain) included in net income		19	(166)
Total unrealized loss on investment securities available-for-sale		(58,387)	(17,783)
Unrealized loss on securities transferred to held-to-maturity	[1]	(49,095)	0
Unrealized gain on derivatives		0	573
Reclassification adjustment for gain included in net income		0	(288)
Total unrealized gain on derivatives		0	285
Other comprehensive loss		(107,482)	(17,498)
Comprehensive (Loss) Income		$ (61,738)	$ 25,971

[1] Represents unamortized accumulated other comprehensive loss on securities transferred to held-to-maturity status.