Defined Benefit Pension and Other Postretirement Benefit Plans (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2019 USD ($)
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans	12
Pension
Defined Benefit Plan Disclosure
Contribution by employer	$ 900
Net periodic benefit (income) costs
Net service cost	1,250	$ 1,233
Interest cost	462	478
Expected return on net assets	(470)	(531)
Amortization:
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	113	107
Prior service cost	21	23
Total net periodic benefit cost (credit)	1,376	1,310
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(86,608)		$ (84,538)
Pension | Maximum
Defined Benefit Plan Disclosure
Estimated employer contribution in current fiscal year	$ 5,100
Pension | Europe
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans	6
Pension | Singapore
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans	1
Pension | Mexico
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans	2
Pension | JAPAN
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans	2
Other Benefits
Net periodic benefit (income) costs
Net service cost	$ 0	0
Interest cost	2	3
Expected return on net assets	0	0
Amortization:
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(37)	(39)
Prior service cost	0	0
Total net periodic benefit cost (credit)	(35)	$ (36)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(341)		(312)
Prepaid Expenses and Other Current Assets [Member] | Pension
Defined Benefit Plan Disclosure
Assets for Plan Benefits, Defined Benefit Plan	(815)		(670)
Prepaid Expenses and Other Current Assets [Member] | Other Benefits
Defined Benefit Plan Disclosure
Assets for Plan Benefits, Defined Benefit Plan	0		0
Accrued Liabilities [Member] | Pension
Defined Benefit Plan Disclosure
Assets for Plan Benefits, Defined Benefit Plan	(2,806)		(2,753)
Accrued Liabilities [Member] | Other Benefits
Defined Benefit Plan Disclosure
Assets for Plan Benefits, Defined Benefit Plan	(50)		(50)
Other Noncurrent Liabilities [Member] | Pension
Defined Benefit Plan Disclosure
Assets for Plan Benefits, Defined Benefit Plan	(84,617)		(82,455)
Other Noncurrent Liabilities [Member] | Other Benefits
Defined Benefit Plan Disclosure
Assets for Plan Benefits, Defined Benefit Plan	$ (291)		$ (262)