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Derivatives (Details 5) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Price Risk Derivative Instruments Not Designated as Hedging Instruments, at Fair Value, Net [Abstract]
Less than one year	$ 2,272
One to two years	1,473
More than two years	0
Total Fair Value	$ 3,745

- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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