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Fair value of financial instruments (Details) - USD ($) $ in Thousands	5 Months Ended	8 Months Ended
	Dec. 31, 2023	Mar. 31, 2024
Level 3 [Member]
Asset or liability measured at fair value on a recurring basis [Abstract]
Change in fair value of contingent consideration	$ 300	$ 100
Recurring [Member] | Level 3 [Member]
Asset or liability measured at fair value on a recurring basis [Abstract]
Contingent consideration	3,282	3,346
Recurring [Member] | Level 2 [Member]
Asset or liability measured at fair value on a recurring basis [Abstract]
Borrowings under Credit Facility	71,000	0
Seller note payable	$ 4,627	$ 4,247

X

- Definition

Fair value portion of contingent consideration.

+ References

No definition available.

+ Details

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Namespace Prefix:	sdhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The change in fair value of contingent consideration from the acquisition date.

+ References

No definition available.

+ Details

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Namespace Prefix:	sdhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

+ References

No definition available.

+ Details

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

X

- Definition

Fair value portion of notes payable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20,22)
-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

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
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