CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS - Schedule of Cash and Cash Equivalents and Short Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Amortized cost
Cash and cash equivalents	$ 3,980	$ 5,196
Fair Value, Inputs, Level 1
Amortized cost
Cash and cash equivalents	3,980	5,196
Total cash, cash equivalents and short-term investments	8,980	10,076
Gross unrealized holding gains
Total cash, cash equivalents and short-term investments	0	3
Gross unrealized holding losses
Total cash, cash equivalents and short-term investments	0	(15)
Estimated fair value
Cash and cash equivalents	3,980	5,196
Total cash, cash equivalents and short-term investments	8,980	10,064
U.S. treasury notes | Fair Value, Inputs, Level 1
Amortized cost
U.S. treasury notes	5,000	4,880
Gross unrealized holding gains
Total cash, cash equivalents and short-term investments	0	3
Gross unrealized holding losses
Total cash, cash equivalents and short-term investments	0	(15)
Estimated fair value
U.S. treasury notes	$ 5,000	$ 4,868