FAIR VALUE (Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Liabilities:
Interest rate derivative liabilities	$ 24,160	$ 16,517
Interest rate derivatives
Assets:
Interest rate derivative assets	0	346
Liabilities:
Interest rate derivative liabilities	24,160	16,517
Interest rate derivatives | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Interest rate derivative assets	0	0
Liabilities:
Interest rate derivative liabilities	0	0
Interest rate derivatives | Significant Other Observable Inputs (Level 2)
Assets:
Interest rate derivative assets	0	346
Liabilities:
Interest rate derivative liabilities	24,160	16,517
Interest rate derivatives | Significant Unobservable Inputs (Level 3)
Assets:
Interest rate derivative assets	0	0
Liabilities:
Interest rate derivative liabilities	$ 0	$ 0