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Loss and Loss Adjustment Expenses (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Loss and Loss Adjustment Expenses [Abstract]
Prior Year Development Changes	$ 33,515	$ (1,409)	$ 55,135	$ (1,036)

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- Definition

Loss and Loss Adjustment Expenses [Abstract]

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No definition available.

+ Details

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Namespace Prefix:	slde_
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- Definition

Prior year development changes.

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No definition available.

+ Details

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