Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Summary of Benefit Payments, Which Reflect Future Service, are Expected to be Paid (Detail)

v3.7.0.1
Employee Benefit Plans - Summary of Benefit Payments, Which Reflect Future Service, are Expected to be Paid (Detail)
$ in Thousands
Mar. 31, 2017
USD ($)
Pension Plans, Defined Benefit [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2018 $ 1,316
2019 1,286
2020 1,439
2021 1,538
2022 1,568
2023-2027 8,659
Total 15,806
Other Postretirement Benefit Plans [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2018 83
2019 80
2020 77
2021 73
2022 69
2023-2027 290
Total $ 672