Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Millions
 1 Months Ended 6 Months Ended
Mar. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Accounting Policies [Line Items]        
Restricted cash       $ 16.6
Return reserves related to accounts receivable reclassified to current liabilities     $ 4.6  
Notes Payable [Member]        
Accounting Policies [Line Items]        
Restricted cash       15.0
Letter of Credit [Member]        
Accounting Policies [Line Items]        
Restricted cash   $ 1.6   $ 1.6
Maximum [Member]        
Accounting Policies [Line Items]        
Ownership percentage of the subsidiary to consolidate their accounts   100.00%    
Maximum [Member] | Maintains Voting Control [Member]        
Accounting Policies [Line Items]        
Ownership percentage of the subsidiary to consolidate their accounts   50.00%    
Journey [Member] | 8% Cumulative Convertible Class A Preferred Stock [Member]        
Accounting Policies [Line Items]        
Preferred Stock, dividend rate percentage 8.00% 8.00%