LEASES - Supplemental Cash Flow information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
LEASES
Operating cash flows from operating leases	$ 4,851	$ 1,615
Operating cash flows from finance leases	318	20
Financing cash flows from finance leases	1,128	199
Right-of-use assets obtained in exchange for new operating lease liabilities	2,931	1,628
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 4,192	$ 1,844