Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Additional Information (Detail)

v3.20.1
Revenue Recognition - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Segments
Dec. 31, 2018
Markets
Disaggregation of Revenue [Line Items]    
Prepaid commission expense | $ $ 0.6  
Number of market locations | Markets   34
Number of operating segments | Segments 3  
Minimum [Member]    
Disaggregation of Revenue [Line Items]    
Sale of subscription revenue term 3 months  
Maximum [Member]    
Disaggregation of Revenue [Line Items]    
Sale of subscription revenue term 2 years