INVESTMENT SECURITIES (Schedule of Available for Sale Securities in Continuous Unrealized Loss Position and Approximate Fair Value of Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Available for Sale Securities, Fair Value
Less Than 12 Months	$ 239,412	$ 530,647
12 Months or Longer	279,344	73,051
Total	518,756	603,698
Approximate Fair Value
Less Than 12 Months	(25,187)	(14,478)
12 Months or Longer	(52,521)	(2,383)
Total	(77,708)	(16,861)
Held to Maturity Securities, Fair Value
Less Than 12 Months	95,642	73,282
12 Months or Longer		0
Total	95,642	73,282
Held to Maturity Securities, Unrealized Losses
Less Than 12 Months	(9,406)	(294)
12 Months or Longer		0
Total	(9,406)	(294)
Approximate Fair Value
Fair Value, Less than 12 months	335,054	603,929
Fair Value, 12 months or longer	279,344	73,051
Fair Value	614,398	676,980
Unrealized Losses
Unrealized Losses, Less than 12 months	(34,593)	(14,772)
Unrealized Losses, 12 months or longer	(52,521)	(2,383)
Unrealized Losses	(87,114)	(17,155)
U.S. Government-Sponsored Agencies [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	85,618	243,187
12 Months or Longer	120,505	29,034
Total	206,123	272,221
Approximate Fair Value
Less Than 12 Months	(14,238)	(6,858)
12 Months or Longer	(24,404)	(966)
Total	(38,642)	(7,824)
Held to Maturity Securities, Fair Value
Less Than 12 Months	37,225	24,975
12 Months or Longer		0
Total	37,225	24,975
Held to Maturity Securities, Unrealized Losses
Less Than 12 Months	(2,775)	(25)
12 Months or Longer		0
Total	(2,775)	(25)
Mortgage-Backed Securities-Residential [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	122,015	265,403
12 Months or Longer	149,883	33,455
Total	271,898	298,858
Approximate Fair Value
Less Than 12 Months	(9,063)	(7,053)
12 Months or Longer	(26,482)	(884)
Total	(35,545)	(7,937)
Held to Maturity Securities, Fair Value
Less Than 12 Months	58,417	48,307
12 Months or Longer		0
Total	58,417	48,307
Held to Maturity Securities, Unrealized Losses
Less Than 12 Months	(6,631)	(269)
12 Months or Longer		0
Total	(6,631)	(269)
SBA Pool Securities [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	22,194	22,057
12 Months or Longer	8,956	10,562
Total	31,150	32,619
Approximate Fair Value
Less Than 12 Months	(1,625)	(567)
12 Months or Longer	(1,635)	(533)
Total	(3,260)	$ (1,100)
State and Political Subdivisions [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	2,341
12 Months or Longer	0
Total	2,341
Approximate Fair Value
Less Than 12 Months	(5)
12 Months or Longer	0
Total	(5)
Corporate Bond [Member]
Available for Sale Securities, Fair Value
Less Than 12 Months	7,244
12 Months or Longer	0
Total	7,244
Approximate Fair Value
Less Than 12 Months	(256)
12 Months or Longer	0
Total	$ (256)