SECURITIES (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
HTM Securities, Amortized Cost	$ 841,349	$ 628,000
Moody's AAA/AA/A
HTM Securities, Amortized Cost	702,902	620,873
Moody's BBB/BB/B
HTM Securities, Amortized Cost	1,192
Moody's Not Rated - Agency
HTM Securities, Amortized Cost	72,866	7,127
Moody's Not Rated - Non-Agency
HTM Securities, Amortized Cost	64,389
U.S. government and agency securities
HTM Securities, Amortized Cost	690	2,604
U.S. government and agency securities | Moody's AAA/AA/A
HTM Securities, Amortized Cost	0	0
U.S. government and agency securities | Moody's BBB/BB/B
HTM Securities, Amortized Cost	0
U.S. government and agency securities | Moody's Not Rated - Agency
HTM Securities, Amortized Cost	690	2,604
U.S. government and agency securities | Moody's Not Rated - Non-Agency
HTM Securities, Amortized Cost	0
Obligations of states and political subdivisions
HTM Securities, Amortized Cost	724,330	620,873
Obligations of states and political subdivisions | Moody's AAA/AA/A
HTM Securities, Amortized Cost	700,138	620,873
Obligations of states and political subdivisions | Moody's BBB/BB/B
HTM Securities, Amortized Cost	1,192
Obligations of states and political subdivisions | Moody's Not Rated - Agency
HTM Securities, Amortized Cost	0	0
Obligations of states and political subdivisions | Moody's Not Rated - Non-Agency
HTM Securities, Amortized Cost	23,000
Mortgage-backed securities
HTM Securities, Amortized Cost	116,329	4,523
Mortgage-backed securities | Moody's AAA/AA/A
HTM Securities, Amortized Cost	2,764	0
Mortgage-backed securities | Moody's BBB/BB/B
HTM Securities, Amortized Cost	0
Mortgage-backed securities | Moody's Not Rated - Agency
HTM Securities, Amortized Cost	72,176	$ 4,523
Mortgage-backed securities | Moody's Not Rated - Non-Agency
HTM Securities, Amortized Cost	$ 41,389