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Organization and Significant Accounting Policies (Narrative) (Details)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Feb. 09, 2021
USD ($)
Feb. 28, 2021
USD ($)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
customer
Dec. 31, 2021
USD ($)
customer
Summary Of Significant Accounting Policies [Line Items]          
Contingent repayment liability | $     $ 168,654   $ 169,717
Single customer with 10% or greater [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Number of customers | customer         0
Sales Revenue, Net [Member] | Single customer with 10% or greater [Member] | Customer Concentration Risk [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Number of customers | customer       0  
Sales Revenue, Net [Member] | Customer two [Member] | Customer Concentration Risk [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Concentration risk, percentage     11.00%    
Sales Revenue, Net [Member] | One Customer [Member] | Customer Concentration Risk [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Concentration risk, percentage     14.00% 12.00%  
Accounts Receivable [Member] | Domestic Customers [Member] | Customer Concentration Risk [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Concentration risk, percentage     56.00%   53.00%
Accounts Receivable [Member] | One Customer [Member] | Customer Concentration Risk [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Concentration risk, percentage     17.00%    
Convertible Senior Notes [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Principal amount of notes | $ $ 900,000 $ 900,000      
Maturity date Feb. 15, 2028 Feb. 15, 2028