Annual report pursuant to Section 13 and 15(d)

Future Minimum Payment Obligations for Operating Leases (Detail)

v3.8.0.1
Future Minimum Payment Obligations for Operating Leases (Detail)
$ in Millions
Dec. 31, 2017
USD ($)
Leases Future Minimum Payments [Line Items]  
2018 $ 3.7
2019 3.5
2020 2.6
2021 1.8
2022 1.1
Thereafter 0.8
Total future payment obligations $ 13.5