XML 105 R90.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 19 - Other Charges (Details Textual) $ in Millions | Jan. 31, 2018 USD ($)
--- | ---
Workforce Reduction Charges [Member] | Fiscal 2018 Restructuring Plan [Member] |
Restructuring and Related Cost, Cost Incurred to Date | $ 0.5
Workforce Reduction Charges and Office Closure Costs [Member] | Fiscal 2017 Restructuring Plan [Member] |
Restructuring and Related Cost, Cost Incurred to Date | $ 0.4

X
- Definition Amount of costs incurred to date for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringAndRelatedCostCostIncurredToDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=dsgx_WorkforceReductionChargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=dsgx_Fiscal2018RestructuringPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=dsgx_WorkforceReductionChargesAndOfficeClosureCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=dsgx_Fiscal2017RestructuringPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |