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Note 6 - Other Receivables (Tables) | 12 Months Ended
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Jan. 31, 2018
Notes Tables |
Other Receivables [Table Text Block] |
|  |  | January 31, 2018 |  |  |  | January 31, 2017 |
Net working capital adjustments receivable from acquisitions |  |  | 118 |  |  |  | 565 |
Other receivables |  |  | 3,053 |  |  |  | 3,144 |
|  |  | 3,171 |  |  |  | 3,709 |

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- Definition Schedule of other receivables. + References No definition available. + Details
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Namespace Prefix: | dsgx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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