Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Concentration of Accounts Receivable (Details)

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Summary of Significant Accounting Policies - Concentration of Accounts Receivable (Details) - Accounts Receivable
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Fox Networks Group    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration of accounts receivable, net of specific allowances, percentage 50.00% 66.00%
Parkview Health    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Concentration of accounts receivable, net of specific allowances, percentage 10.00% 0.00%