DERIVATIVES (OCI ROLLFORWARD) (DETAILS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DERIVATIVES [ABSTRACT]
Aggregate unrealized net gain/(loss) at beginning of year	$ (32,393)	$ (26,885)	$ (18,345)
Add: Net gain/(loss) from change in fair value of cash flow hedges	31,053	11,242	(16,349)
Less: Net (gain)/loss reclassified to earnings from effective hedges	(14,406)	(16,750)	7,809
Aggregate unrealized net gain/(loss) at end of period	$ (15,746)	$ (32,393)	$ (26,885)