LEASES - Supplemental Cash Flow information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
LEASES
Operating cash flows from operating leases	$ 9,653	$ 3,238
Operating cash flows from finance leases	633	50
Financing cash flows from finance leases	2,294	408
Right-of-use assets obtained in exchange for new operating lease liabilities	3,851	2,397
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 5,039	$ 1,844