v3.21.2

Other Receivables, Net (Details) - USD ($) | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Receivables [Abstract] |  |
Allowance for doubtful debt |  | $ 10,000,000.0
Provision for doubtful accounts |  | 10,055,203
Recovery of other receivables | 4,786,814 |
Wrote off other receivables | $ 11,665 | $ 1,763

X
- References No definition available. + Details
Name: | sino_AllowanceDueToContract
Namespace Prefix: | sino_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References No definition available. + Details
Name: | sino_AllowanceForDoubtfulAccountsReceivableWriteOff
Namespace Prefix: | sino_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Provision for doubtful accounts. + References No definition available. + Details
Name: | sino_ProvisionForDoubtfullAccounts
Namespace Prefix: | sino_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Recovery of other receivables. + References No definition available. + Details
Name: | sino_RecoveryOfOtherReceivables
Namespace Prefix: | sino_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration