REVENUE RECOGNITION - Disaggregated Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 38,461	$ 35,089
Royalty and license
Disaggregation of Revenue [Line Items]
Revenue	38,178	34,689
Fixed fee license revenue
Disaggregation of Revenue [Line Items]
Revenue	11,953	5,843
Per-unit royalty revenue
Disaggregation of Revenue [Line Items]
Revenue	26,225	28,846
Development, services, and other
Disaggregation of Revenue [Line Items]
Revenue	$ 283	$ 400