UNAUDITED CONDENSED INTERIM CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jan. 31, 2019	Oct. 26, 2018	Jul. 31, 2018	Mar. 27, 2017	Feb. 09, 2017	Jan. 18, 2017
Common stock, par value (in dollars per share)	$ 0.001		$ 0.001
Common stock, shares authorized	750,000,000		750,000,000
Common stock, shares issued	60,362,164	4,830,000	22,430,121		2,179,989	1,117,011
Common stock, shares outstanding	60,362,164		22,430,121
Series I Convertible Preferred Stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001		$ 0.001
Convertible preferred stock, shares authorized	6,000		6,000
Convertible preferred stock, shares issued	0		6,000
Olaregen Series A Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.001		$ 0.001
Convertible preferred stock, shares authorized	592,683		0
Convertible preferred stock, shares issued	592,683		0
Regentys Series A Redeemable Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.0001		$ 0.0001
Convertible preferred stock, shares authorized	2,793,192		2,793,192
Series H Convertible Preferred Stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001		$ 0.001
Convertible preferred stock, shares authorized	109,000		109,000
Convertible preferred stock, shares issued	0		63,000	63,000