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Derivative Instruments - Fair Value (Table) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Short-term liabilities	$ 467	$ 8,255
Long-term liabilities	0	4,422
Total	467	12,677
Interest Rate Swaps
Derivative [Line Items]
Short-term liabilities	467	8,255
Long-term liabilities	0	4,422
Total	$ 467	$ 12,677

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- Definition

Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

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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.

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