Stockholders Equity (Details 3)	9 Months Ended
	Oct. 31, 2020 USD ($) $ / shares shares
Stockholders' equity
Number of options outstanding, beginning | shares	24,900
Number of options granted | shares	0
Number of options outstanding, ending | shares	24,900
Number of options exercisable | shares	8,300
Weighted average exercise price outstanding, beginning | $ / shares	$ 11.17
Weighted average exercise price granted | $ / shares	0
Weighted average exercise price outstanding, ending | $ / shares	11.17
Weighted average exercise price exercisable | $ / shares	$ 11.17
Weighted average remaining contractual term outstanding (in years), beginning	9 years 6 months 10 days
Weighted average remaining contractual term outstanding (in years), ending	8 years 9 months 10 days
Weighted average remaining contractual term exercisable	8 years 9 months 10 days
Aggregate intrinsic value outstanding, beginning | $	$ 0
Aggregate intrinsic value granted | $	0
Aggregate intrinsic value outstanding, ending | $	0
Aggregate intrinsic value exercisable | $	$ 0