Defined Benefit Pension and Other Postretirement Benefit Plans (Details) (USD $)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Europe
Defined Benefit Plan Disclosure
Number of defined benefit pension plans	6
Singapore
Defined Benefit Plan Disclosure
Number of defined benefit pension plans	1
Mexico
Defined Benefit Plan Disclosure
Number of defined benefit pension plans	2
Defined benefit pension plans
Net periodic benefit (income) costs
Net service cost	$ 338,000	$ 331,000
Interest cost	478,000	428,000
Expected return on net assets	(124,000)	(109,000)
Amortization:
Actuarial (gain) loss	74,000	78,000
Prior service cost	4,000	1,000
Total net periodic benefit (income) costs	770,000	729,000
Contribution by employer	300,000
Defined benefit pension plans | Maximum
Amortization:
Estimated employer contribution in current fiscal year	1,600,000
Defined benefit postretirement pension plan
Net periodic benefit (income) costs
Interest cost	6,000	5,000
Amortization:
Actuarial (gain) loss	(52,000)	(70,000)
Total net periodic benefit (income) costs	$ (46,000)	$ (65,000)