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Revenues, Remaining Performance Obligation (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Revenues [Abstract]    
Contract assets $ 0 $ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-12-31    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Expected timing of satisfaction, period 1 year