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Commitments, Contingencies and Guarantees (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Jan. 31, 2023 | Jan. 31, 2022
Commitments, Contingencies and Guarantees |  |
Unrecognized aggregate liability for the unvested DSUs | $ 0 |
Unrecognized aggregate liability for the unvested CRSUs | $ 700 |
Equity derivatives, number of common shares held (in shares) | 281,768 |
DSU liability, number of common shares (in shares) | 283,338 |
Contingent consideration | $ 30,949 | $ 12,990
GreenMile, NetCHB, XPS and Supply Vision |  |
Commitments, Contingencies and Guarantees |  |
Maximum potential performance-based contingent consideration | $ 148,000 |
Period for revenue performance targets | 2 years |
Contingent consideration | $ 30,900 |

X
- Definition Represents the period (following acquisition) over which contingent consideration is to be paid by the reporting entity if the acquired entity meets certain performance targets. + References No definition available. + Details
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Namespace Prefix: | dsgx_
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Balance Type: | na
Period Type: | duration

X
- Definition The cash settled restricted share units nonvested, total compensation cost not yet recognized. + References No definition available. + Details
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Namespace Prefix: | dsgx_
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Period Type: | duration

X
- Definition Represents the number of common shares for which there is a deferred share unit liability. + References No definition available. + Details
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Namespace Prefix: | dsgx_
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Balance Type: | na
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X
- Definition The deferred share units nonvested, total compensation cost not yet recognized. + References No definition available. + Details
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X
- Definition The number of shares held by certain derivative instruments entered into by the company. + References No definition available. + Details
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Period Type: | instant

X
- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 + Details
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Balance Type: | credit
Period Type: | instant

X
- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126966325&loc=d3e6819-128478 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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X
- 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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X
- Details
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Period Type: |