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Intangibles, net (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
Kona Grill tradename $ 17,400 $ 17,400
Less: accumulated amortization (435) (217)
Total intangible, net $ 16,965 $ 17,183