v3.7.0.1

Retirement Plans - Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Mar. 31, 2016
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Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan amounts recognized in balance sheet | $ (44,106) | $ (42,630)
Noncurrent assets |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan amounts recognized in balance sheet | 46 | 0
Accrued expenses |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan amounts recognized in balance sheet | (1,222) | (1,321)
Other liabilities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan amounts recognized in balance sheet | $ (42,930) | $ (41,309)

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