v3.21.2
Segment Reporting (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Segment Reporting [Abstract]
Gross revenue
$ 25.8
$ 25,800,000
Gross cost of revenue
$ 24,300,000
$ 24,300,000
X
- Definition
Gross cost of revenue.
+ References
No definition available.
+ Details
Name:
sino_GrossCostOfRevenue
Namespace Prefix:
sino_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
duration
X
- Definition
Gross revenue.
+ References
No definition available.
+ Details
Name:
sino_GrossRevenue
Namespace Prefix:
sino_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_SegmentReportingAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration