LEASES (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use-assets	$ 17,003	$ 19,712
Operating lease liabilities - current	3,324	3,643
Operating lease liabilities - non-current	14,305	16,664
Total operating lease liabilities	$ 17,629	$ 20,307
Weighted Average Remaining Lease Term (in years)
Operating leases	5 years 1 month 6 days	5 years 10 months 24 days
Weighted Average Discount Rate
Operating leases	4.02%	4.00%