INVESTMENT SECURITIES (Schedule of Available for Sale Securities in Continuous Unrealized Loss Position and Approximate Fair Value of Investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Available for Sale Securities, Fair Value
Less Than 12 Months	$ 85,595	$ 530,647
12 Months or Longer	380,647	73,051
Total	466,242	603,698
Approximate Fair Value
Less Than 12 Months	(6,518)	(14,478)
12 Months or Longer	(102,106)	(2,383)
Total	(108,624)	(16,861)
Held to Maturity Securities, Fair Value
Less Than 12 Months	87,857	73,282
12 Months or Longer		0
Total	87,857	73,282
Held to Maturity Securities, Unrealized Losses
Less Than 12 Months	(15,694)	(294)
12 Months or Longer		0
Total	(15,694)	(294)
Approximate Fair Value
Fair Value, Less than 12 months	173,452	603,929
Fair Value, 12 months or longer	380,647	73,051
Fair Value	554,099	676,980
Unrealized Losses
Unrealized Losses, Less than 12 months	(22,212)	(14,772)
Unrealized Losses, 12 months or longer	(102,106)	(2,383)
Unrealized Losses	(124,318)	(17,155)
U.S. Government-Sponsored Agencies [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months		243,187
12 Months or Longer	189,410	29,034
Total	189,410	272,221
Approximate Fair Value
Less Than 12 Months		(6,858)
12 Months or Longer	(55,360)	(966)
Total	(55,360)	(7,824)
Held to Maturity Securities, Fair Value
Less Than 12 Months	35,131	24,975
12 Months or Longer		0
Total	35,131	24,975
Held to Maturity Securities, Unrealized Losses
Less Than 12 Months	(4,869)	(25)
12 Months or Longer		0
Total	(4,869)	(25)
Mortgage-Backed Securities-Residential [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	70,005	265,403
12 Months or Longer	166,924	33,455
Total	236,929	298,858
Approximate Fair Value
Less Than 12 Months	(5,425)	(7,053)
12 Months or Longer	(42,609)	(884)
Total	(48,034)	(7,937)
Held to Maturity Securities, Fair Value
Less Than 12 Months	52,726	48,307
12 Months or Longer		0
Total	52,726	48,307
Held to Maturity Securities, Unrealized Losses
Less Than 12 Months	(10,825)	(269)
12 Months or Longer		0
Total	(10,825)	(269)
SBA Pool Securities [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	3,788	22,057
12 Months or Longer	24,313	10,562
Total	28,101	32,619
Approximate Fair Value
Less Than 12 Months	(282)	(567)
12 Months or Longer	(4,137)	(533)
Total	(4,419)	$ (1,100)
State and Political Subdivisions [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	2,584
12 Months or Longer	0
Total	2,584
Approximate Fair Value
Less Than 12 Months	(29)
12 Months or Longer	0
Total	(29)
Corporate Bond [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	9,218
12 Months or Longer	0
Total	9,218
Approximate Fair Value
Less Than 12 Months	(782)
12 Months or Longer	0
Total	$ (782)