SECURITIES (Securities with Continuous Loss Position) (Details) $ in Thousands	Jun. 30, 2022 USD ($) numberOfSecurities	Dec. 31, 2021 USD ($) numberOfSecurities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 2,076,720	$ 1,359,199
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	606,463	811,239
Debt Securities, Available-for-sale, Unrealized Loss Position	2,683,183	2,170,438
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	201,268	38,379
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	97,432	12,715
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 298,700	$ 51,094
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions \| numberOfSecurities	263	97
U.S. Government and agency obligations
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 125,486	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	19,513	71,306
Debt Securities, Available-for-sale, Unrealized Loss Position	144,999	71,306
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	710	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	416	621
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	1,126	621
Municipal bonds
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	197,628	40,397
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	8,541
Debt Securities, Available-for-sale, Unrealized Loss Position	197,628	48,938
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	32,499	221
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	99
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	32,499	320
Corporate bonds
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	121,892	8,009
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	9,938
Debt Securities, Available-for-sale, Unrealized Loss Position	121,892	17,947
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	5,969	121
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	62
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	5,969	183
Mortgage-backed or related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,536,926	1,307,411
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	586,950	721,454
Debt Securities, Available-for-sale, Unrealized Loss Position	2,123,876	2,028,865
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	160,253	38,028
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	97,016	11,933
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	257,269	49,961
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	94,788	3,382
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	94,788	3,382
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,837	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,837	$ 9

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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