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Summary of Significant Accounting Policies - Restricted Cash and Hotel Receivables (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 27,166 $ 25,083
Hotel receivables, allowance for doubtful accounts 200 155
Renovation, Property Tax And Insurance Escrows    
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 27,200 $ 25,100