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Revision of Prior Year Financial Statements (Details) - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Long-term debt $ 61,361,000 $ 0
Current portion of long-term debt 0 22,519,000
Total current liabilities $ 16,271,000 51,890,000
Previously reported    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Long-term debt   22,500,000
Current portion of long-term debt   0
Total current liabilities   $ 29,400,000