Defined Benefit Pension and Other Postretirement Benefit Plans (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($) plan	Jun. 30, 2016 USD ($)	Mar. 31, 2018 USD ($)
Defined Benefit Plan Disclosure
Document Period End Date	Jun. 30, 2017
Pension
Defined Benefit Plan Disclosure
Contribution by employer	$ 200
Net periodic benefit (income) costs
Net service cost (1)	1,321	$ 347
Interest cost	426	358
Expected return on net assets	(505)	(94)
Amortization:
Defined Benefit Plan, Actuarial Gain (Loss)	90	115
Prior service cost	20	21
Total net periodic benefit (income) costs	$ 1,352	747
Pension | Europe
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans | plan	6
Pension | Singapore
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans | plan	1
Pension | Mexico
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans | plan	2
Pension | JAPAN
Defined Benefit Plan Disclosure
Defined Benefit Plan, Number of Plans | plan	1
Post-retirement Benefit Plan
Net periodic benefit (income) costs
Net service cost (1)	$ 0	0
Interest cost	3	4
Expected return on net assets	0	0
Amortization:
Defined Benefit Plan, Actuarial Gain (Loss)	(47)	(42)
Prior service cost	0	0
Total net periodic benefit (income) costs	$ (44)	$ (38)
Subsequent Event [Member] | Pension | Maximum
Defined Benefit Plan Disclosure
Estimated employer contribution in current fiscal year			$ 3,300