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May 13, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
May 09, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
May 09, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Apr 30, 2019 10-Q Quarterly report htmlhtml   pdfpdf   xbrlxbrl  
Apr 30, 2019 8-K Current report htmlhtml   pdfpdf  
Mar 18, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Mar 15, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Mar 14, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Mar 13, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Mar 08, 2019 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf