Quarterly report pursuant to Section 13 or 15(d)

Revenue - Narrative (Details)

v3.21.2
Revenue - Narrative (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]        
Contract liabilities $ 30,800 $ 50,300 $ 30,800  
Contract liabilities, current 28,190 45,800 28,190 $ 42,274
Contract liabilities, long-term 2,600 4,500 2,600  
Decrease in contract liabilities $ (16,777) $ (3,776)    
Decrease in current contract liabilities     17,600  
Decrease in long-term contract liabilities     $ 1,900