Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

11. Operating Leases - Group as Lessor (Details)

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11. Operating Leases - Group as Lessor (Details)
Dec. 31, 2017
USD ($)
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]  
Total $ 7,629,411
Less Than One Year [Member]  
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]  
Total 2,035,573
Between 1 and 5 years [Member]  
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]  
Total 5,498,899
Later Than Five Years [Member]  
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]  
Total $ 94,939