Related party transactions (Details) (USD $)
|
3 Months Ended | ||
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Mar. 31, 2014
|
Mar. 31, 2013
|
Dec. 31, 2013
|
|
Related Party Transaction [Line Items] | |||
Due to related parties | $ 28,719 | $ 27,979 | |
Other assets | 1,436,397 | 1,333,432 | |
Non-Interest Bearing Cash Advances [Member]
|
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Related Party Transaction [Line Items] | |||
Other assets | 1,033,942 | 1,107,220 | |
Design Services [Member]
|
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Related Party Transaction [Line Items] | |||
Due to related parties | 20,000 | ||
Incurred expenses | 123,440 | ||
Legal Fees [Member]
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Related Party Transaction [Line Items] | |||
Due to related parties | 53,349 | 416,700 | |
Incurred expenses | 118,000 | 118,000 | |
Construction Serivces [Member]
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Related Party Transaction [Line Items] | |||
Due to related parties | 15,900 | ||
Incurred expenses | $ 661,800 | $ 673,400 |