STOCKHOLDERS' EQUITY Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Payment Arrangement, Expense	$ 3,947	$ 3,514	$ 11,014	$ 10,216
Restricted Stock Units (RSUs) [Member] | Time Based RSUs
Employee Benefits and Share-based Compensation	2,892	2,507	8,272	7,528
Restricted Stock Units (RSUs) [Member] | Performance-Based Vesting [Member]
Employee Benefits and Share-based Compensation	1,007	977	2,598	2,599
Employee Stock
Employee Benefits and Share-based Compensation	48	30	144	89
Research and Development Expense [Member]
Share-based Payment Arrangement, Expense	498	340	1,363	1,270
Selling and Marketing Expense [Member]
Share-based Payment Arrangement, Expense	743	639	2,141	1,858
General and Administrative Expense [Member]
Share-based Payment Arrangement, Expense	$ 2,118	$ 2,092	$ 5,907	$ 5,727