INVESTMENT SECURITIES - Total investment securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Contractual maturities of securities
Available for Sale, Cost Basis, Within 1 year	$ 7,624
Available for Sale, Cost Basis, After 1 year but within 5 years	35,374
Available for Sale, Cost Basis, After 5 years but within 10 years	41,575
Available for Sale, Cost Basis, Over 10 years	99,445
Investment securities available for sale, Cost Basis	184,018	$ 198,417
Available for Sale, Fair Value, Within 1 year	7,524
Available for Sale, Fair Value, After 1 year but within 5 years	33,882
Available for Sale, Fair Value, After 5 years but within 10 years	36,561
Available for Sale, Fair Value, Over 10 years	87,744
Available for Sale, Fair Value, Total	165,711	179,508
Held to Maturity, Cost Basis, Within 1 year	3,182
Held to Maturity, Cost Basis, After 1 year but within 5 years	15,110
Held to Maturity, Cost Basis, After 5 years but within 10 years	21,484
Held to Maturity, Cost Basis, Over 10 years	24,203
Investment securities held to maturity, Cost Basis	63,979	61,878
Held to Maturity, Fair Value, Within 1 year	3,128
Held to Maturity, Fair Value, After 1 year but within 5 years	14,440
Held to Maturity, Fair Value, After 5 years but within 10 years	19,032
Held to Maturity, Fair Value, Over 10 years	22,021
Held to Maturity, Fair Value, Total	58,621	55,192
U.S. Agency
Contractual maturities of securities
Available for Sale, Cost Basis, Within 1 year	500
Available for Sale, Cost Basis, After 1 year but within 5 years	176
Available for Sale, Cost Basis, After 5 years but within 10 years	4,000
Available for Sale, Cost Basis, Over 10 years	1,359
Investment securities available for sale, Cost Basis	6,035	11,797
Available for Sale, Fair Value, Within 1 year	499
Available for Sale, Fair Value, After 1 year but within 5 years	169
Available for Sale, Fair Value, After 5 years but within 10 years	3,434
Available for Sale, Fair Value, Over 10 years	1,237
Available for Sale, Fair Value, Total	5,339	10,533
Held to Maturity, Cost Basis, After 5 years but within 10 years	2,500
Investment securities held to maturity, Cost Basis	2,500	2,500
Held to Maturity, Fair Value, After 5 years but within 10 years	2,121
Held to Maturity, Fair Value, Total	2,121	2,068
Municipal
Contractual maturities of securities
Available for Sale, Cost Basis, Within 1 year	2,112
Available for Sale, Cost Basis, After 1 year but within 5 years	4,511
Available for Sale, Cost Basis, After 5 years but within 10 years	4,536
Investment securities available for sale, Cost Basis	11,159	20,837
Available for Sale, Fair Value, Within 1 year	2,085
Available for Sale, Fair Value, After 1 year but within 5 years	4,336
Available for Sale, Fair Value, After 5 years but within 10 years	3,939
Available for Sale, Fair Value, Total	10,360	19,038
Held to Maturity, Cost Basis, Within 1 year	1,211
Held to Maturity, Cost Basis, After 1 year but within 5 years	13,108
Held to Maturity, Cost Basis, After 5 years but within 10 years	17,174
Held to Maturity, Cost Basis, Over 10 years	1,294
Investment securities held to maturity, Cost Basis	32,787	33,993
Held to Maturity, Fair Value, Within 1 year	1,195
Held to Maturity, Fair Value, After 1 year but within 5 years	12,580
Held to Maturity, Fair Value, After 5 years but within 10 years	15,143
Held to Maturity, Fair Value, Over 10 years	1,072
Held to Maturity, Fair Value, Total	29,990	30,115
Corporate bonds and other securities
Contractual maturities of securities
Held to Maturity, Cost Basis, Within 1 year	1,000
Held to Maturity, Cost Basis, After 1 year but within 5 years	2,002
Held to Maturity, Cost Basis, After 5 years but within 10 years	488
Held to Maturity, Cost Basis, Over 10 years	980
Investment securities held to maturity, Cost Basis	4,470	6,508
Held to Maturity, Fair Value, Within 1 year	969
Held to Maturity, Fair Value, After 1 year but within 5 years	1,860
Held to Maturity, Fair Value, After 5 years but within 10 years	488
Held to Maturity, Fair Value, Over 10 years	980
Held to Maturity, Fair Value, Total	4,297	6,336
U.S. Agency mortgage-backed securities
Contractual maturities of securities
Available for Sale, Cost Basis, After 1 year but within 5 years	1,667
Available for Sale, Cost Basis, After 5 years but within 10 years	5,717
Available for Sale, Cost Basis, Over 10 years	97,436
Investment securities available for sale, Cost Basis	104,820	102,631
Available for Sale, Fair Value, After 1 year but within 5 years	1,615
Available for Sale, Fair Value, After 5 years but within 10 years	5,429
Available for Sale, Fair Value, Over 10 years	86,031
Available for Sale, Fair Value, Total	93,075	89,985
Held to Maturity, Cost Basis, Within 1 year	971
Held to Maturity, Cost Basis, After 5 years but within 10 years	1,322
Held to Maturity, Cost Basis, Over 10 years	21,929
Investment securities held to maturity, Cost Basis	24,222	18,877
Held to Maturity, Fair Value, Within 1 year	964
Held to Maturity, Fair Value, After 5 years but within 10 years	1,280
Held to Maturity, Fair Value, Over 10 years	19,969
Held to Maturity, Fair Value, Total	22,213	16,673
Corporate bonds.
Contractual maturities of securities
Available for Sale, Cost Basis, Within 1 year	5,012
Available for Sale, Cost Basis, After 1 year but within 5 years	29,020
Available for Sale, Cost Basis, After 5 years but within 10 years	27,322
Available for Sale, Cost Basis, Over 10 years	650
Investment securities available for sale, Cost Basis	62,004	63,152
Available for Sale, Fair Value, Within 1 year	4,940
Available for Sale, Fair Value, After 1 year but within 5 years	27,762
Available for Sale, Fair Value, After 5 years but within 10 years	23,759
Available for Sale, Fair Value, Over 10 years	476
Available for Sale, Fair Value, Total	$ 56,937	$ 59,952

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