REVENUE RECOGNITION (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregated revenue

The following table presents the disaggregation of the Company's revenue for the three and six months ended June 30, 2019 and 2018 under ASC 606.

	Three Months Ended  June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Fixed fee license revenue	$	4,254	$	1,881	$	5,994	$	77,637
Per-Unit royalty revenue	4,414		4,111		7,721		13,690
Total royalty and license revenue	8,668		5,992		13,715		91,327
Development, services, and other revenue	75		152		150		233
Total revenues	$	8,743	$	6,144	$	13,865	$	91,560