Pension and Other Post-retirement Benefit Plans - Narrative (Details) (USD $)	12 Months Ended			1 Months Ended		12 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Jul. 31, 2012 Film and Electrolytic	Jul. 31, 2012 Minimum Film and Electrolytic	Mar. 31, 2014 Maximum	Mar. 31, 2013 Pension	Mar. 31, 2014 Pension	Mar. 31, 2013 Pension	Mar. 31, 2012 Pension	Mar. 31, 2014 Pension Europe plan	Mar. 31, 2014 Pension Singapore plan	Mar. 31, 2014 Pension Mexico plan	Mar. 31, 2014 Other Benefits plan	Mar. 31, 2013 Other Benefits	Mar. 31, 2012 Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit plans											6	1	2	2
Percentage of pension liability paid upon retirement					20.00%
Settlement gain				$ 1,700,000
Curtailment gain (loss)							(2,000,000)	32,000	(266,000)	0				0	0	0
Estimated employer contribution in the next fiscal year								1,600,000						88,000
Tax effect of accumulated other comprehensive income (loss)	2,200,000	2,100,000	2,800,000
Actuarial losses	88,000
Prior service costs	18,000
Number of fiscal years	10 years
Gains net of the employer matches related to the deferred compensation plan	189,000	141,000	26,000
Total benefits accrued	1,600,000	1,900,000
Company matched contribution (as a percent)						6.00%
Matched contribution of the entity	$ 2,200,000	$ 2,500,000	$ 2,200,000