DISCONTINUED OPERATIONS - Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets	$ 0	$ 941
Total current liabilities	23	115
Discontinued Operations | RTM
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Prepaid and other current assets	0	941
Total current assets	0	941
Total assets	0	941
Accrued expenses and other current liabilities	23	115
Total current liabilities	23	115
Total liabilities	$ 23	$ 115