Development costs - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Development Costs [Abstract]
Engineering expenditures	$ 34,765	$ 32,877

The amount of engineering expenditures incurred during the period.

No definition available.

Name:	sang_EngineeringExpenditures
Namespace Prefix:	sang_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration