DEPOSITS DEPOSITS (Maturities and Weighted Average Interest Rates of Certificates of Deposit) (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Maturities of Time Deposits [Abstract]
Maturing in one year or less		$ 694,530
Maturing after one year through two years		123,003
Maturing after two years through three years		71,727
Maturing after three years through four years		13,041
Maturing after four years through five years		10,999
Maturing after five years		2,052
Total certificates of deposit	[1]	$ 915,352	$ 1,120,403
Weighted Average Rate [Abstract]
Maturing in one year or less		0.93%
Maturing after one year through two years		1.47%
Maturing after two years through three years		1.25%
Maturing after three years through four years		2.17%
Maturing after four years through five years		1.31%
Maturing after five years		1.00%
Total certificates of deposit		1.05%

[1] Certificates of deposit include $101,000 and $269,000 of acquisition premiums at September 30, 2020 and December 31, 2019, respectively.