Business Combination - Narrative (Details) $ in Thousands	Oct. 04, 2019 USD ($) restaurant
Business Acquisition [Line Items]
Contractual purchase price	$ 25,000
Apportionment of rent and utilities	775
Current liabilities	7,690
Bargain purchase gain attributable to Kona Grill acquisition	$ 10,963
Kona Grill Inc.
Business Acquisition [Line Items]
Number of domestic restaurants acquired | restaurant	24
Contractual purchase price	$ 25,000
Apportionment of rent and utilities	1,500
Current liabilities	7,700
Bargain purchase gain attributable to Kona Grill acquisition	$ 11,000