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Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($)
Dec. 31, 2021
Jul. 15, 2019
Senior Secured Notes Due 2025 | Senior Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate   12.50%
Fair Value, Inputs, Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, fair value disclosure $ 0  
Liabilities, fair value disclosure $ 0