INVESTMENT SECURITIES (Investment Securities at an Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
INVESTMENT SECURITIES
Less than 12 months, Fair Value	$ 661,020	$ 1,036,979
Less than 12 months, Unrealized Losses	(78,465)	(17,990)
12 months or longer, Fair Value	85,382	175,681
12 months or longer, Unrealized Losses	(17,170)	(6,743)
Total, Fair Value	746,402	1,212,660
Total, Unrealized Losses	(95,635)	(24,733)
States and political subdivisions
INVESTMENT SECURITIES
Less than 12 months, Fair Value	114,446	79,360
Less than 12 months, Unrealized Losses	(24,159)	(1,252)
12 months or longer, Fair Value	12,088	10,864
12 months or longer, Unrealized Losses	(4,075)	(597)
Total, Fair Value	126,534	90,224
Total, Unrealized Losses	(28,234)	(1,849)
Corporate securities
INVESTMENT SECURITIES
Less than 12 months, Fair Value	4,460	8,633
Less than 12 months, Unrealized Losses	(560)	(235)
12 months or longer, Fair Value	26,684	21,960
12 months or longer, Unrealized Losses	(4,739)	(830)
Total, Fair Value	31,144	30,593
Total, Unrealized Losses	(5,299)	(1,065)
U.S. Treasury obligations and direct obligations of U.S. Government agencies
INVESTMENT SECURITIES
Less than 12 months, Fair Value	8,914	16,103
Less than 12 months, Unrealized Losses	(109)	(415)
12 months or longer, Fair Value	17,874	10,891
12 months or longer, Unrealized Losses	(1,616)	(153)
Total, Fair Value	26,788	26,994
Total, Unrealized Losses	(1,725)	(568)
Residential - U.S. Government-sponsored entities
INVESTMENT SECURITIES
Less than 12 months, Fair Value	447,161	926,570
Less than 12 months, Unrealized Losses	(51,051)	(15,883)
12 months or longer, Fair Value	14,439	114,747
12 months or longer, Unrealized Losses	(2,904)	(4,110)
Total, Fair Value	461,600	1,041,317
Total, Unrealized Losses	(53,955)	(19,993)
Residential - Non-government agencies
INVESTMENT SECURITIES
Less than 12 months, Fair Value	9,100	0
Less than 12 months, Unrealized Losses	(408)	0
12 months or longer, Fair Value	782	938
12 months or longer, Unrealized Losses	(208)	(64)
Total, Fair Value	9,882	938
Total, Unrealized Losses	(616)	(64)
Commercial - U.S. Government-sponsored entities
INVESTMENT SECURITIES
Less than 12 months, Fair Value	40,647	6,313
Less than 12 months, Unrealized Losses	(2,128)	(205)
12 months or longer, Fair Value	13,515	16,281
12 months or longer, Unrealized Losses	(3,628)	(989)
Total, Fair Value	54,162	22,594
Total, Unrealized Losses	(5,756)	$ (1,194)
Commercial - Non-government agencies
INVESTMENT SECURITIES
Less than 12 months, Fair Value	36,292
Less than 12 months, Unrealized Losses	(50)
12 months or longer, Fair Value	0
12 months or longer, Unrealized Losses	0
Total, Fair Value	36,292
Total, Unrealized Losses	$ (50)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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