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Intangible Assets - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2021 | Aug. 01, 2020 | Jul. 31, 2021 | Aug. 01, 2020
Intangible Assets [Line Items] |  |  |  |
Impairments of intangible assets |  |  | $ 0 | $ 0
Amortization expense | $ 400,000 | $ 1,000,000.0 | 1,400,000 | $ 2,100,000
Customer Contracts [Member] | RITEC [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Finite lived intangible assets remaining useful Life | 4 years |  |  |
Customer Contracts [Member] | Honeywell Asset Purchase and License Agreement [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Finite lived intangible assets remaining useful Life | 6 years |  |  |
Customer Contracts [Member] | Intangible Assets, Amortization Period [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Decrease In amortization expense | $ 587,000 |  | 587,000 |
Increase in net income due to change of amortization method | 587,000 |  | 587,000 |
Increase in net income loss net of tax due to change in the method of amortization | $ 553,000 |  | $ 553,000 |
Increase in diluted earnings per share due to change in the method of amortization | $ 0.08 |  | $ 0.08 |
Customer Contracts [Member] | Intangible Assets, Amortization Period [Member] | RITEC [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Finite lived intangible assets remaining useful Life | 20 years |  |  |
Customer Contracts [Member] | Intangible Assets, Amortization Period [Member] | Honeywell Asset Purchase and License Agreement [Member] |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Finite lived intangible assets remaining useful Life | 20 years |  |  |

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- Definition Decrease In amortization expense + References No definition available. + Details
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- Definition Increase in diluted earnings per share due to change in the method of amortization. + References No definition available. + Details
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- Definition Increase in net income due to change in the method of amortization. + References No definition available. + Details
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- Definition Increase in net income loss net of tax due to change in the method of amortization. + References No definition available. + Details
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- Definition Intangible Assets [Line Items] + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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