NOTES PAYABLE (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Interest expense	$ 4,974	$ 4,047
Interest payable, current	500		$ 1,400
Amortization of deferred financing costs	274	265
Debt refinancing costs	$ 300
Interest Rate Swaps
Derivative [Line Items]
Increase in interest expense		$ (11)