LEASES - Lease Costs Included in the Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 3,820	$ 3,271
Operating cash flows from finance leases	27	42
Principal payments under finance lease obligations	$ 244	$ 230