DEBT SECURITIES - Amortized cost and estimated fair value of held-to-maturity and available-for-sale securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Amortized Cost
Due within one year	$ 0
Due between one year and five years	0
Due between five years and ten years	0
Due after ten years	0
Securities (MBS and Agency)	89,745
Total	89,745	$ 45,623
Fair Value
Due within one year	0
Due between one year and five years	0
Due between five years and ten years	0
Due after ten years	0
Securities (MBS and Agency)	89,615
Total	89,615	45,607
Amortized Cost
Due within one year	1,998
Due between one year and five years	2,248
Due between five years and ten years	43,408
Due after ten years	6,160
Securities (MBS and Agency)	63,103
Amortized Cost	116,917	95,044
Fair Value
Due within one year	1,983
Due between one year and five years	2,290
Due between five years and ten years	42,456
Due after ten years	6,231
Securities (MBS and Agency)	59,657
Total	$ 112,617	$ 90,635