XML 118 R69.htm IDEA: XBRL DOCUMENT v3.20.1

Note 12 - Debt (Details Textual) - USD ($) $ in Millions	Jan. 25, 2019	Jan. 31, 2020	Jan. 31, 2019	Jan. 24, 2019
Letters of Credit Outstanding, Amount		$ 0.2	$ 0.2
Revolving Operating Credit Facility [Member] | Senior Secured Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 150.0
Revolving Operating Credit Facility [Member] | Senior Secured Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 350.0
Revolving Operating Credit Facility [Member] | Senior Secured Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 500.0
Line of Credit Borrowings to Support Foreign Exchange and Interest Rate Hedging [Member] | Senior Secured Credit Facility [Member]
Debt Instrument, Term	5 years
Senior Secured Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Senior Secured Credit Facility [Member] | Minimum [Member] | Canada or US Prime Rate, BA, or LIBOR [Member]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Senior Secured Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.40%
Senior Secured Credit Facility [Member] | Maximum [Member] | Canada or US Prime Rate, BA, or LIBOR [Member]
Debt Instrument, Basis Spread on Variable Rate	2.50%

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period of time between issuance and maturity of debt instrument, 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_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_CreditFacilityAxis=dsgx_RevolvingOperatingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=dsgx_SeniorSecuredCreditFacilityMember
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_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=dsgx_LineOfCreditBorrowingsToSupportForeignExchangeAndInterestRateHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=dsgx_SeniorSecuredCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=dsgx_CanadaOrUsPrimeRateBaOrLiborMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: