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Significant Accounting Policies - Narrative (Details)
6 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
reportingUnit
Dec. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Allowance for doubtful accounts   $ 700,000 $ 800,000
Number of reporting units | reportingUnit 1    
Goodwill impairment   0  
Deferred cost of sales $ 100,000 $ 200,000  
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Customer payment terms 30 days    
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Customer payment terms 60 days