INVESTMENT SECURITIES - Maturity Dates of Marketable Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 91,157	$ 73,225
Total debt securities available for sale by maturity dates
Debt Securities, Available-for-sale [Line Items]
Fair Value	91,157
Under 1 Year	65,790
1 Year up to 5 Years	25,367
More than 5 Years	0
U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	64,074
Under 1 Year	38,838
1 Year up to 5 Years	25,236
More than 5 Years	0
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	9,327
Under 1 Year	9,327
1 Year up to 5 Years	0
More than 5 Years	0
U.S. mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	13,300
Under 1 Year	13,169
1 Year up to 5 Years	131
More than 5 Years	0
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Fair Value	4,456
Under 1 Year	4,456
1 Year up to 5 Years	0
More than 5 Years	$ 0

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