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FAIR VALUE MEASUREMENTS (Details) (Recurring basis, USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets/(Liabilities) at Fair Value
Fair Value Measurements at Reporting Date
Derivative assets	$ 287	$ 2
Derivative liabilities	(7,222)	(9,850)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Measurements at Reporting Date
Derivative assets	287	2
Derivative liabilities	$ (7,222)	$ (9,850)

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details