Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Schedule of Net Accounts Receivable Balance Concentrations by Major Category (Details)

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Summary of Significant Accounting Policies - Schedule of Net Accounts Receivable Balance Concentrations by Major Category (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Accounts Notes And Loans Receivable [Line Items]    
Net accounts receivable $ 37,041 $ 31,444
Net accounts receivable, percentage 100.00% 100.00%
Rental    
Accounts Notes And Loans Receivable [Line Items]    
Net accounts receivable $ 2,413 $ 4,212
Net accounts receivable, percentage 6.50% 13.40%
Business To Business And Other Receivables    
Accounts Notes And Loans Receivable [Line Items]    
Net accounts receivable $ 34,628 $ 27,232
Net accounts receivable, percentage 93.50% 86.60%