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Consolidated Balance Sheets (Parenthetical)
Apr. 16, 2018
$ / shares
Jun. 30, 2018
$ / shares
shares
May 31, 2018
shares
Apr. 30, 2018
shares
Dec. 31, 2017
$ / shares
shares
Consolidated Balance Sheets          
Common stock, par value (in dollars per share) | $ / shares $ 0.00001 $ 0.00001     $ 0.00001
Common stock, authorized   25,000,000 25,000,000 4,000,000 25,000,000
Common stock, issued   4,077,667     1,370,992
Common stock, outstanding   4,077,667     1,370,992
Reverse stock split ratio 0.04