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Summary of Significant Accounting Policies (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Oct. 31, 2014
USD ($)
Jun. 30, 2016
USD ($)
shares
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
segment
shares
Jun. 30, 2015
USD ($)
Dec. 31, 2015
shares
Mar. 31, 2015
shares
Income Taxes              
Provision for income taxes   $ 0 $ 0 $ 0 $ 0    
Segment Information              
Number of operating segment | segment       1      
Series A Convertible Preferred stock              
Convertible Preferred Stock              
Preferred stock, share issued | shares   745,637   745,637   745,637 745,637
MLT              
Income Taxes              
Provision for income taxes $ 0