Employee Benefits - Net Funded Status (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Noncurrent benefit asset recorded in Other Noncurrent Assets	$ 10,417	$ 7,555
Accrued noncurrent benefit liability recorded in Pension, Postretirement and Other Long-Term Liabilities	(75,448)	(81,772)
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Noncurrent benefit asset recorded in Other Noncurrent Assets	0	0
Accrued current benefit liability recorded in Accrued Expenses and Other Current Liabilities	(2,791)	(3,010)
Accrued noncurrent benefit liability recorded in Pension, Postretirement and Other Long-Term Liabilities	(47,833)	(52,736)
Net amount recognized	(50,624)	(55,746)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Noncurrent benefit asset recorded in Other Noncurrent Assets	10,417	7,555
Accrued current benefit liability recorded in Accrued Expenses and Other Current Liabilities	(1,702)	(1,224)
Accrued noncurrent benefit liability recorded in Pension, Postretirement and Other Long-Term Liabilities	(11,837)	(13,743)
Net amount recognized	$ (3,122)	$ (7,412)