Quarterly report pursuant to Section 13 or 15(d)

Revenue and Cost of Revenues - Narrative (Details)

v3.20.2
Revenue and Cost of Revenues - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]          
Increase (decrease) in contract with customer liability     $ 1,837,000    
Recognized deferred revenue $ 5,209,000 $ 4,434,000 31,038,000 $ 21,022,000  
Deferred sales incentive compensation 10,326,000   10,326,000   $ 9,387,000
Amortization expense for the deferred sales incentive compensation $ 861,000 $ 1,099,000 2,933,000 2,503,000  
Impairment loss for capitalized costs     $ 0 $ 0