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Fair Value Disclosures (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Liabilities, Fair Value Adjustment $ 0 $ 0 $ 0 $ 0
Assets, Fair Value Adjustment $ 0 $ 0 $ 0 $ 0