Certain Risks and Concentrations (Details) |
3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
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| Major Suppliers [Member] | A (Hai Yi Shipping Limited, a related party) [Member] | ||||||||||
| Concentration Risk [Line Items] | ||||||||||
| Concentration risk, Percentage | [1] | [1] | 22.00% | [1] | ||||||
| Major Suppliers [Member] | B (Hong Fa Shipping Limited, a related party) [Member] | ||||||||||
| Concentration Risk [Line Items] | ||||||||||
| Concentration risk, Percentage | 97.00% | 51.00% | 64.00% | 53.00% | ||||||
| Major Suppliers [Member] | C (Hong Long, a related party) [Member] | ||||||||||
| Concentration Risk [Line Items] | ||||||||||
| Concentration risk, Percentage | [1] | 36.00% | [1] | 21.00% | ||||||
| Major Customers [Member] | A [Member] | ||||||||||
| Concentration Risk [Line Items] | ||||||||||
| Concentration risk, Percentage | 16.00% | [1] | [1] | [1] | ||||||
| Major Customers [Member] | B [Member] | ||||||||||
| Concentration Risk [Line Items] | ||||||||||
| Concentration risk, Percentage | 14.00% | [1] | [1] | [1] | ||||||
| Major Customers [Member] | C [Member] | ||||||||||
| Concentration Risk [Line Items] | ||||||||||
| Concentration risk, Percentage | 10.00% | [1] | [1] | [1] | ||||||
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