LEASES (Details) - Components of lease expense - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Lease cost
Operating lease cost	$ 725	$ 2,235
Amortization of right-of-use assets	6	9
Interest on lease liabilities	1	2
Short-term lease cost	9	19
Variable lease cost	76	247
Sublease income	(61)	(183)
Total lease cost	756	2,329
Supplemental cash flow information related to leases was as follows:
Operating cash flows from finance leases	5	8
Operating cash flows from operating leases	849	2,658
Financing cash flows from finance leases	$ 1	$ 2