CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS - Schedule of Cash and Cash Equivalents and Short Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized cost
Cash and cash equivalents	$ 4,185	$ 5,196
Fair Value, Inputs, Level 1
Amortized cost
Cash and cash equivalents	4,185
Total cash, cash equivalents and short-term investments	9,067	$ 10,100
Gross unrealized holding gains
Total cash, cash equivalents and short-term investments	101
Gross unrealized holding losses
Total cash, cash equivalents and short-term investments	(2)
Estimated fair value
Cash and cash equivalents	4,185
Total cash, cash equivalents and short-term investments	9,166
U.S. treasury notes | Fair Value, Inputs, Level 1
Amortized cost
U.S. treasury notes	4,882
Gross unrealized holding gains
Total cash, cash equivalents and short-term investments	101
Gross unrealized holding losses
Total cash, cash equivalents and short-term investments	(2)
Estimated fair value
U.S. treasury notes	$ 4,981