Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Amount of cost expensed and capitalized for award under share-based payment arrangement.

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Stock-Based Compensation (Details) - USD ($)	3 Months Ended		9 Months Ended
Stock-Based Compensation (Details) - USD ($)	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Cost of Goods Sold [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 54,000	$ 65,000	$ 164,000	$ 193,000
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	199,000	$ 188,000	595,000	$ 566,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 1,415,000		$ 1,415,000
Unrecognized compensation expense, weighted average period to be recognized			3 years
Restricted Stock Units (RSUs) [Member] \| 2019 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards authorized (shares)	1,000,000		1,000,000
Granted in the period (shares)			68,870
Vested in period (shares)			140,295
Forfeited in period (shares)			0
Awards available for future issuance (shares)	628,435		628,435
Restricted Stock Units (RSUs) [Member] \| 2011 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards authorized (shares)	2,000,000		2,000,000
Granted in the period (shares)			0
Vested in period (shares)			119,200
Forfeited in period (shares)			0
Awards available for future issuance (shares)	12,892		12,892
Director [Member] \| Restricted Stock Awards [Member] \| 2011 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted in the period (shares)			0
Vested in period (shares)			0