LEASES - RIGHT-OF-USE ASSETS AND LEASE LIABILITIES (Details) $ in Thousands	Dec. 31, 2019 USD ($)
NONCURRENT ASSETS
Operating lease assets	$ 87,793
Finance lease assets	29,220
Total lease assets	117,013
Current
Operating lease liabilities	3,805
Finance lease liabilities	10,714
Noncurrent
Operating lease liabilities	82,909
Finance lease liabilities	25,846
Total lease liabilities	$ 123,274