Other Accrued Expenses (Details) - USD ($)	Oct. 31, 2020	Jan. 31, 2020
Other Accrued Expenses (Tables)
Other employee related costs, including employee benefits	$ 0	$ 199,000
Freight expenses and material purchases	1,148,000	673,000
Professional fees	34,000	279,000
Sales comissions	0	234,000
Other vendors accruals	1,577,000	718,000
Income tax accrual	1,926,000	342,000
Other accrued expenses	$ 4,685,000	$ 2,445,000