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Other Liabilities (Details) (USD $)	12 Months Ended
Other Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Other current liabilities	$ 2,551,000us-gaap_OtherLiabilitiesCurrent	$ 4,405,000us-gaap_OtherLiabilitiesCurrent
Interest and penalties	0	1,300,000
Increase in tax liability	700,000
Argentina Equity Tax 2009 Through 2012
Other current liabilities	200,000
Interest and penalties	900,000
VAT tax credit	700,000
Increase in tax liability	$ 700,000

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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