ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases
Operating Lease Cost (Cost resulting from lease payments)	$ 3,166	$ 3,200	$ 9,477	$ 9,642
Variable Lease Cost (Cost excluded from lease payments)	34	40	109	116
Total Lease Cost	3,200	3,240	9,586	9,758
Operating Lease - Operating Cash Flows (Fixed Payments)	3,241	3,212	9,897	10,010
Operating Lease - Operating Cash Flows (Liability Reduction)	$ 2,080	$ 1,888	$ 6,258	$ 6,653
Weighted Average Lease Term - Operating Leases	5 years 5 months 1 day	5 years 10 months 28 days	5 years 5 months 1 day	5 years 10 months 28 days
Weighted Average Discount Rate - Operating Leases	11.00%	11.00%	11.00%	11.00%