Annual report pursuant to Section 13 and 15(d)

Commitment and Contingencies - Additional Information (Detail)

v3.10.0.1
Commitment and Contingencies - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Commitment And Contingencies [Line Items]  
Purchase price of business to be acquired $ 9.3
Expansion and enhancement contracts 29.7
New Jersey [Member] | Class Action [Member]  
Commitment And Contingencies [Line Items]  
Settlement agreement, amount 8.0
Remaining settlement, amount $ 0.2