Transaction costs (Tables)

12 Months Ended

Jan. 31, 2020

Transaction costs [abstract]

Schedule of transaction costs

		2020		2019		2018
Acquisition of subsidiaries	$	331,973	$	2,154,102	$	—
Financing commissions		—		2,819,889		—
	$	331,973	$	4,973,991	$	—