Quarterly report pursuant to Section 13 or 15(d)

Nonconsolidated variable interest entities - Information of Equity Investments (Details)

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Nonconsolidated variable interest entities - Information of Equity Investments (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]      
Equity method investments $ 3,110,868   $ 3,065,557
Equity in income of investee companies 45,311 $ 82,585  
Bagatelle NY LA Investors, LLC (Bagatelle Investors)      
Schedule of Equity Method Investments [Line Items]      
Equity method investments 18,631   6,569
Bagatelle Little West 12th, LLC ( Bagatelle NY)      
Schedule of Equity Method Investments [Line Items]      
Equity method investments 2,635,496   2,552,687
One 29 Park, LLC (One 29 Park)      
Schedule of Equity Method Investments [Line Items]      
Equity method investments $ 456,741   $ 506,301