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Quarterly report pursuant to Section 13 or 15(d)

Related party (Narrative) (Details)

v3.19.1
Related party (Narrative) (Details) - $ / shares
Jan. 31, 2019
Jul. 19, 2018
Apr. 30, 2018
Related Party Transaction [Line Items] Ìý Ìý Ìý
Per share price $ 0.001 Ìý $ 0.001
Common Stock [Member] Ìý Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý Ìý
Treasury stock repurchased Ìý 1,000,000 Ìý
Per share price Ìý $ 7.40 Ìý
Sale of common stock per share price Ìý $ 7.40 Ìý