DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS - Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds as presented in the statement of cash flows	$ 27,977	$ 0
RTM | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds	38,960
Less: cash and restricted cash sold	(9,547)
Less: transaction costs	(1,436)
Net cash proceeds as presented in the statement of cash flows	$ 27,977