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Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Accounting Policies [Abstract]    
Contingency period (or less) 90 days  
Required payment period (typically less) 90 days  
Contract assets $ 0 $ 0
Contract liabilities $ 0 $ 0