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Goodwill - Summary of Goodwill by reporting unit (Detail) - USD ($) | 12 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020
Goodwill [Line Items] |  |
Balance at beginning | $ 12,034,000 | $ 12,329,000
Foreign currency translation | 772 | (295,000)
Balance at end | 12,806,000 | 12,034,000
Product Idenification [Member] |  |
Goodwill [Line Items] |  |
Balance at beginning | 7,512,000 | 7,807,000
Foreign currency translation | 772 | (295,000)
Balance at end | 8,284,000 | 7,512,000
T M [Member] |  |
Goodwill [Line Items] |  |
Balance at beginning | 4,522,000 | 4,522,000
Balance at end | $ 4,522,000 | $ 4,522,000

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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