CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS - Schedule of Cash and Cash Equivalents and Short Term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized cost
Cash and cash equivalents	$ 3,962	$ 5,196
Fair Value, Inputs, Level 1
Amortized cost
Cash and cash equivalents	3,962
Total cash, cash equivalents and short-term investments	8,910	$ 10,100
Gross unrealized holding gains
Total cash, cash equivalents and short-term investments	0
Gross unrealized holding losses
Total cash, cash equivalents and short-term investments	(5)
Estimated fair value
Cash and cash equivalents	3,962
Total cash, cash equivalents and short-term investments	8,905
U.S. treasury notes | Fair Value, Inputs, Level 1
Amortized cost
U.S. treasury notes	4,948
Gross unrealized holding gains
Total cash, cash equivalents and short-term investments	0
Gross unrealized holding losses
Total cash, cash equivalents and short-term investments	(5)
Estimated fair value
U.S. treasury notes	$ 4,943