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Financial Derivatives and Hedging Activities (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Fair value amounts recorded as a component of accumulated other comprehensive income
Beginning Balance	$ (599)	$ 1,649
Deferred (losses) gains on cash flow hedges	541	(568)
Reclassified to earnings	70	(572)
Ending Balance	$ 12	$ 509

X

- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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- Definition

Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

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