DEPOSITS DEPOSITS (Maturities and Weighted Average Interest Rates of Certificates of Deposit) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Maturities of Time Deposits [Abstract]
Maturing in one year or less		$ 644,909
Maturing after one year through two years		130,384
Maturing after two years through three years		52,948
Maturing after three years through four years		11,044
Maturing after four years through five years		10,261
Maturing after five years		1,508
Total certificates of deposit	[1]	$ 851,054	$ 915,320
Weighted Average Rate [Abstract]
Maturing in one year or less		0.49%
Maturing after one year through two years		0.80%
Maturing after two years through three years		0.78%
Maturing after three years through four years		1.27%
Maturing after four years through five years		0.42%
Maturing after five years		0.88%
Total certificates of deposit		0.57%

[1] Certificates of deposit include $2,000 and $58,000 of acquisition discounts at September 30, 2021 and December 31, 2020, respectively.