The ONE Group Hospitality, Inc. Annual report pursuant to Section 13 and 15(d)

Geographic information (Details) (USD $)	12 Months Ended
Geographic information (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues - owned units	$ 40,499,590us-gaap_SalesRevenueGoodsNet	$ 36,568,285us-gaap_SalesRevenueGoodsNet
Management, incentive, royalty and development fee revenue	8,823,318us-gaap_SalesRevenueServicesNet	7,336,628us-gaap_SalesRevenueServicesNet
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues - owned units	40,499,590	36,568,285
Management, incentive, royalty and development fee revenue	5,378,028	4,979,190
Assets	10,777,015	7,572,058
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues - owned units	0	0
Management, incentive, royalty and development fee revenue	3,445,290	2,357,438
Assets	$ 1,695,688	$ 654,579