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Fixed Assets - Summary of Fixed Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Abstract]    
Land $ 7,263 $ 3,103
Buildings and leasehold improvements 32,384 18,054
Furniture, fixtures and equipment 8,272 6,136
Capitalized software 1,305 1,305
Fixed assets, gross 49,224 28,598
Less accumulated depreciation and amortization 16,606 13,688
Fixed assets, net $ 32,618 $ 14,910