Annual report pursuant to Section 13 and 15(d)

Property and equipment, net (Details)

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Property and equipment, net (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Less accumulated depreciation and amortization $ 15,809,101 $ 13,188,872
Property & equipment, net 36,815,239 27,952,327
Depreciation and amortization 2,647,333 2,191,450
Impairment loss   3,452,206
Accumulated depreciation written off   476,462
Furniture, fixtures and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 9,543,573 7,576,125
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 36,147,135 24,365,576
Leasehold improvements and furniture, fixtures and equipment    
Property, Plant and Equipment [Line Items]    
Property & equipment, net 29,881,607 18,752,829
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 5,579,510 7,967,181
Restaurant supplies    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,354,122 1,232,317
Asset under construction    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 684,983 $ 300,734
STK Edinburgh    
Property, Plant and Equipment [Line Items]    
Property and equipment, net 1,000,000  
Disposal Group, Including Discontinued Operation, Liabilities 1,021,358  
Impairment of assets disposed of $ 95,773