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Summary of Significant Accounting Policies (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
Jun. 30, 2020
USD ($)
Segment
$ / shares
Sep. 30, 2019
USD ($)
Deferred Offering Costs [Abstract]      
Deferred offering costs $ 0 $ 0 $ 2,600
Contract Liability [Abstract]      
Beginning contract liability 13,471 4,880  
Revenue recognized from contract liabilities included in the beginning balance (10,578) (4,807)  
Increases due to cash received, net of amounts recognized in revenue during the period 9,958 12,778  
Ending contract liability 12,851 12,851  
Contract Asset [Abstract]      
Contract asset 600 600  
Increase to net income from new revenue recognition standard $ 300 $ 300  
Increase to basic EPS from new revenue recognition standard | $ / shares $ 0.05 $ 0.06  
Increase to diluted EPS from new revenue recognition standard | $ / shares $ 0.06 $ 0.06  
Timing of Revenue [Abstract]      
Percentage on Timing of Revenue Recognition 100.00% 100.00%  
Segment Information [Abstract]      
Number of operating segments | Segment   1  
Transferred at Point in Time [Member]      
Timing of Revenue [Abstract]      
Percentage on Timing of Revenue Recognition 98.00% 97.10%  
Transferred over Time [Member]      
Timing of Revenue [Abstract]      
Percentage on Timing of Revenue Recognition 2.00% 2.90%  
IPO [Member]      
Deferred Offering Costs [Abstract]      
Offering cost charged against additional paid-in capital   $ 6,400