XML 65 R51.htm IDEA: XBRL DOCUMENT
v3.22.4

Basis of Presentation (Details) - USD ($) | 12 Months Ended
--- | ---
Jan. 31, 2023 | Jan. 31, 2022 | Jan. 31, 2021
Foreign currency re-measurement loss | $ 1,200,000 | $ 300,000 | $ 800,000
Goodwill impairment loss | $ 0 | $ 0 | $ 0
Share-based Payment Arrangement, Option [Member] |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period (Year) | 5 years |  |
Share-based compensation arrangement by share-based payment award, expiration period (Year) | 7 years |  |
Performance Shares [Member] |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period (Year) | 3 years |  |
Share-based compensation arrangement by share-based payment award, expiration period (Year) | 10 years |  |
Restricted Stock Units (RSUs) [Member] |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period (Year) | 3 years |  |
Share-based compensation arrangement by share-based payment award, expiration period (Year) | 10 years |  |
Deferred Share Unit Plan [Member] |  |  |
Base annual fee, percent | 50.00% |  |
Equipment [Member] |  |  |
Property and equipment useful life (Year) | 3 years |  |
Minimum [Member] |  |  |
Costs to obtain a contract with a customer, period of benefit including renewals (Year) | 4 years |  |
Minimum [Member] | Directors and Officers [Member] |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period (Year) | 3 years |  |
Minimum [Member] | Cash-Settled Restricted Share Plan [Member] |  |  |
Cash settled restricted share units, vesting period (Year) | 3 years |  |
Minimum [Member] | Computer Equipment [Member] |  |  |
Property and equipment useful life (Year) | 1 year |  |
Minimum [Member] | Furniture and Fixtures [Member] |  |  |
Property and equipment useful life (Year) | 3 years |  |
Maximum [Member] |  |  |
Costs to obtain a contract with a customer, period of benefit including renewals (Year) | 6 years |  |
Maximum [Member] | Directors and Officers [Member] |  |  |
Share-based compensation arrangement by share-based payment award, award vesting period (Year) | 5 years |  |
Maximum [Member] | Cash-Settled Restricted Share Plan [Member] |  |  |
Cash settled restricted share units, vesting period (Year) | 5 years |  |
Maximum [Member] | Computer Equipment [Member] |  |  |
Property and equipment useful life (Year) | 13 years |  |
Maximum [Member] | Furniture and Fixtures [Member] |  |  |
Property and equipment useful life (Year) | 14 years |  |
Customer Relationships [Member] | Minimum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 2 years |  |
Customer Relationships [Member] | Maximum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 20 years |  |
Existing Technology [member] | Minimum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 4 years |  |
Existing Technology [member] | Maximum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 12 years |  |
Trade Names [Member] | Minimum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 3 years |  |
Trade Names [Member] | Maximum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 15 years |  |
Noncompete Agreements [Member] | Minimum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 2 years |  |
Noncompete Agreements [Member] | Maximum [Member] |  |  |
Acquired intangible assets estimated useful lives (Year) | 12 years |  |

X
- Definition The base annual fee percentage required for Directors participating in a share-based compensation plan. + References No definition available. + Details
Name: | dsgx_BaseAnnualFeePercent
Namespace Prefix: | dsgx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | dsgx_CashSettledRestrictedShareUnitsVestingPeriod
Namespace Prefix: | dsgx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period of benefit, including renewals, associated with the asset for the incremental costs of obtaining a contract with a customer. + References No definition available. + Details
Name: | dsgx_CostsToObtainAContractWithACustomerPeriodOfBenefitIncludingRenewals
Namespace Prefix: | dsgx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=125521441&loc=d3e30690-110894 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123602790&loc=d3e30226-110892 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 10 -Section 45 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=126980362&loc=d3e28228-110885 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124440516&loc=d3e30840-110895 + Details
Name: | us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the 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 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: 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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 55 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=122137925&loc=d3e14258-109268 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period from grant date that an equity-based award expires, 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/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=dsgx_DeferredShareUnitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=dsgx_DirectorsAndOfficersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=dsgx_CashsettledRestrictedSharePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=dsgx_ExistingTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |