Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Estimated Future Benefit Payments (Detail)

v3.8.0.1
Employee Benefit Plans - Estimated Future Benefit Payments (Detail)
$ in Thousands
Dec. 31, 2017
USD ($)
Compensation And Retirement Disclosure [Abstract]  
2018 $ 265
2019 265
2020 363
2021 363
2022 363
2023 - 2027 $ 1,968