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Revenue Recognition - Summary of Contract Balances (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Balance at, January 1, 2021 $ 5
Balance at, March 31, 2021 0
Contractual Liability  
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Balance at, January 1, 2021 5
Recognition of revenue $ (5)