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Subsequent Event (Details) - $ / shares
Apr. 28, 2017
May 15, 2017
May 12, 2017
Mar. 31, 2017
Dec. 31, 2016
Common stock: par value (in dollars per share)       $ 0.0001 $ 0.0001
Subsequent Event [Member]          
Description of reverse stock split

Six-to-one

        
Common stock: par value (in dollars per share) $ 0.0001        
Share price (in dollars per share)   $ 1.00 $ 1.00