Significant accounting judgements, estimates and uncertainties (Details)	12 Months Ended
Jun. 30, 2025
Significant Accounting Judgements, Estimates And Uncertainties [Abstract]
Weighted average amortized period of contract cost	4 years 2 months 12 days

Weighted Average Amortized Period Of Contract Cost

No definition available.

Name:	sang_WeightedAverageAmortizedPeriodOfContractCost
Namespace Prefix:	sang_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration