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Nature of Operations, Segment Reporting and Geographical Information - Summary of Other Information by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 114,955	$ 115,473
Depreciation and Amortization	3,994	5,983	$ 6,284
Capital Expenditures	1,796	2,587	2,906
Operating Segments [Member] | Product Identification [Member]
Segment Reporting Information [Line Items]
Assets	51,732	50,047
Depreciation and Amortization	1,157	1,835	1,928
Capital Expenditures	847	1,563	2,001
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Assets	50,374	51,262
Depreciation and Amortization	2,837	4,148	4,356
Capital Expenditures	949	1,024	$ 905
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Assets	$ 12,849	$ 14,164

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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