DERIVATIVE FINANCIAL INSTRUMENTS (Details 2) (Cash flow hedges, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Gain (Loss) on Derivatives in Cash Flow Hedging Relationship
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives (Effective Portion)	$ (4,000)	$ 1,130,000
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	(1,777,000)	(2,349,000)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives (Ineffective Portion)	(223,000)	(190,000)
Expected reclassification out of accumulated other comprehensive income (loss) into earnings during the next twelve months	100,000
Inflation
Gain (Loss) on Derivatives in Cash Flow Hedging Relationship
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives (Effective Portion)	(4,000)	1,130,000
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	(1,777,000)	(2,349,000)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives (Ineffective Portion)	$ (223,000)	$ (190,000)