MARKETABLE SECURITIES - Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Amortized Cost
Due within one year	$ 0
Due after one year through five years	11,236
Due after five years through ten years	21,799
Due after ten years	7,253
Available-for-sale debt securities, amortized cost basis	208,165	$ 341,628
Estimated Fair Value
Due within one year	0
Due after one year through five years	10,841
Due after five years through ten years	20,043
Due after ten years	7,545
Available-for-sale debt securities, estimated fair value	188,927	342,206
Held to Maturity Amortized Cost
Due within one year	68,567
Due after one year through five years	100,545
Due after five years through ten years	91,726
Due after ten years	73,718
Held to Maturity debt securities, amortized cost	509,008	184,263
Held to Maturity Estimated Fair Value
Due within one year	67,613
Due after one year through five years	97,850
Due after five years through ten years	88,045
Due after ten years	69,241
Held to maturity debt securities, estimated fair value	475,068	192,472
Mortgage-backed securities
Amortized Cost
Available-for-sale debt securities, amortized cost basis	145,896
Available-for-sale debt securities, amortized cost basis	145,896	221,610
Estimated Fair Value
Available-for-sale debt securities, estimated fair value	130,341
Available-for-sale debt securities, estimated fair value	130,341	221,308
Held to Maturity Amortized Cost
Held to Maturity debt securities, amortized cost	132,693
Held to Maturity debt securities, amortized cost	132,693	2,953
Held to Maturity Estimated Fair Value
Held to maturity debt securities, estimated fair value	117,985
Held to maturity debt securities, estimated fair value	117,985	2,916
Collateralized mortgage obligations
Amortized Cost
Available-for-sale debt securities, amortized cost basis	21,981
Available-for-sale debt securities, amortized cost basis	21,981	74,925
Estimated Fair Value
Available-for-sale debt securities, estimated fair value	20,157
Available-for-sale debt securities, estimated fair value	20,157	$ 74,992
Held to Maturity Amortized Cost
Held to Maturity debt securities, amortized cost	41,759
Held to Maturity debt securities, amortized cost	41,759
Held to Maturity Estimated Fair Value
Held to maturity debt securities, estimated fair value	34,334
Held to maturity debt securities, estimated fair value	$ 34,334