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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, 2020	Jan. 31, 2019	Jan. 31, 2018
Segment Reporting Information [Line Items]
Assets	$ 116,664	$ 118,983
Depreciation and Amortization	6,284	6,152	$ 3,994
Capital Expenditures	2,906	2,645	2,204
Operating Segments [Member] | Product Identification [Member]
Segment Reporting Information [Line Items]
Assets	55,427	51,639
Depreciation and Amortization	1,928	1,888	1,536
Capital Expenditures	2,001	1,935	1,497
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Assets	56,988	59,702
Depreciation and Amortization	4,356	4,264	2,458
Capital Expenditures	905	710	$ 707
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Assets	$ 4,249	$ 7,642

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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