OTHER SUPPLEMENTAL INFORMATION - Noncash Transactions (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Costs to issue stock included in prepaid expenses and other current assets	$ 1,442
Costs for additions to property and equipment in accounts payable	179
Costs to issue stock included in accounts payable	$ 995