Summary of Business and Significant Accounting Policies (Self-Insurance) (Details) - USD ($)	Jan. 31, 2022	Jan. 31, 2021
Loss Contingencies [Line Items]
Discount rate	4.00%	4.00%
Product liability
Loss Contingencies [Line Items]
Self insurance reserve	$ 250,000	$ 250,000
Workers Compensation
Loss Contingencies [Line Items]
Self insurance reserve	250,000	250,000
General liability
Loss Contingencies [Line Items]
Self insurance reserve	50,000	50,000
Auto Liability
Loss Contingencies [Line Items]
Self insurance reserve	$ 50,000	$ 50,000