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Supplemental Financial Statement Information - Schedule of Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Condensed Financial Information Disclosure [Abstract]
Security bonus plan	$ 7,114	$ 7,165
Deferred compensation	12,443	12,589
Other	5,660	4,891
Total other liabilities	$ 25,217	$ 24,645

X

- Definition

Other Miscellaneous Liabilities

+ References

No definition available.

+ Details

Name:	dsgr_OtherMiscellaneousLiabilities
Namespace Prefix:	dsgr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Security bonus plan.

+ References

No definition available.

+ Details

Name:	dsgr_SecurityBonusPlan
Namespace Prefix:	dsgr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of the liabilities for deferred compensation arrangements classified as other.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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