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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, 2021	Jan. 31, 2020	Jan. 31, 2019
Segment Reporting Information [Line Items]
Assets	$ 115,473	$ 116,664
Depreciation and Amortization	5,983	6,284	$ 6,152
Capital Expenditures	2,587	2,906	2,645
Operating Segments [Member] | Product Identification [Member]
Segment Reporting Information [Line Items]
Assets	50,047	51,439
Depreciation and Amortization	1,835	1,928	1,888
Capital Expenditures	1,563	2,001	1,935
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Assets	51,262	57,050
Depreciation and Amortization	4,148	4,356	4,264
Capital Expenditures	1,024	905	$ 710
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Assets	$ 14,164	$ 8,175

X

- Definition

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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