STOCK PLANS AND STOCK BASED COMPENSATION - EMPLOYEE STOCK PURCHASE PLAN (Details) - ESPP - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
	Apr. 19, 2018	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
ESPP expense														$ 111	$ 104	$ 104
Class A Common Stock
Employee Stock purchase price		85.00%	85.00%	85.00%	85.00%	85.00%	85.00%	85.00%	85.00%	85.00%	85.00%	85.00%	85.00%
Minimum | Class A Common Stock
Employee Stock purchase price	85.00%