RIGHT-OF-USE ASSETS AND LEASES - Components of Lease Right-of-Use Assets and Liabilities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Assets
Operating lease, right-of-use assets	$ 18,058
Liabilities
Operating lease liabilities, current	7,063
Operating lease liabilities, non-current	12,044
Total operating lease liabilities	$ 19,107