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Derivatives (Derivatives Other Than Cash Flow Hedges Table) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Price Risk Derivative Instruments Not Designated as Hedging Instruments, at Fair Value, Net [Abstract]
Less than one year	$ 1,935
One to two years	0
More than two years	0
Total Fair Value	$ 1,935

- 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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