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v3.22.4

Other Receivables - Additional information (Details) - USD ($) $ in Millions | Jan. 31, 2023 | Jan. 31, 2022
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Other Receivables |  |
Capital adjustments receivable from acquisitions is recoverable from amounts held in escrow | $ 0.4 | $ 0.3

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- Definition Amount recoverable from funds held In escrow related to acquisitions. + References No definition available. + Details
Name: | dsgx_AmountsRecoverableFromFundsHeldInEscrow
Namespace Prefix: | dsgx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | dsgx_OtherReceivablesDisclosureAbstract
Namespace Prefix: | dsgx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration