LEASES - RIGHT-OF-USE ASSETS AND LEASE LIABILITIES (Details) $ in Thousands	Mar. 31, 2020 USD ($)
NONCURRENT ASSETS
Operating lease assets	$ 102,395
Finance lease assets	73,630
Total lease assets	176,025
Current
Operating lease liabilities	4,156
Finance lease liabilities	10,872
Noncurrent
Operating lease liabilities	96,713
Finance lease liabilities	68,184
Total lease liabilities	$ 179,925