FAIR VALUE (Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Liabilities
Interest rate swap liabilities	$ 40,135	$ 16,517
Interest rate swap contracts
Assets:
Interest rate derivative assets	0	346
Liabilities
Interest rate swap liabilities	40,135	16,517
Interest rate swap contracts | Level 1
Assets:
Interest rate derivative assets	0	0
Liabilities
Interest rate swap liabilities	0	0
Interest rate swap contracts | Level 2
Assets:
Interest rate derivative assets	0	346
Liabilities
Interest rate swap liabilities	40,135	16,517
Interest rate swap contracts | Level 3
Assets:
Interest rate derivative assets	0	0
Liabilities
Interest rate swap liabilities	$ 0	$ 0