Summary of Significant Accounting Policies (Details 4) - USD ($)	3 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Shipping and management agency services	$ 500,000
Inland transportation management services		920,000
Freight logistics services	1,242,142	5,487,553
Container trucking services	44,084	91,980
Total	$ 1,786,226	$ 6,499,533

Total costs related to services rendered by an entity during the reporting period.

No definition available.

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- Definition

Cost of freight-in, whether based on weight, negotiated freight rates and method of transportation (that is, rail, barge, truck, and so forth).

+ References

No definition available.

+ Details

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Namespace Prefix:	sino_
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Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	sino_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

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