SECURITIES - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
SECURITIES [Abstract]
Amortized Cost, Within 1 year	$ 0
Fair Value, Within 1 year	0
Amortized Cost, After 1 year through 5 years	5,064
Fair Value, After 1 year through 5 years	5,010
Amortized Cost, After 5 years through 10 years	19,481
Fair Value, After 5 years through 10 years	19,012
Amortized Cost, After 10 years	178,728
Fair Value, After 10 years	159,552
Amortized Cost, Declining-balance securities	419,020
Fair Value, Declining-balance securities	371,853
Amortized Cost	622,293	$ 637,577
Fair value	$ 555,427	$ 567,540