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Revenue - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Jan. 01, 2018
Disaggregation of Revenue [Line Items]    
Amortization capitalized contract cost $ 200,000  
Contract Acquisition Costs    
Disaggregation of Revenue [Line Items]    
Capitalized contract cost   $ 700,000
Impairment capitalized contract cost 0  
Contract Fulfillment Costs    
Disaggregation of Revenue [Line Items]    
Capitalized contract cost $ 100,000