Investment in NEC TOKIN (Details 4) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Investment in NEC TOKIN	$ 20,334	$ 45,016
NECTOKIN
Schedule of Equity Method Investments [Line Items]
Investment in NEC TOKIN	20,334	45,016
Purchase price accounting basis adjustment:
Property, plant and equipment (1)	3,365	3,334
Technology (1)	(10,134)	(10,889)
Long-term debt (1)	(1,975)	(2,707)
Goodwill	(7,555)	(7,082)
Equity Method Investment, Indemnity Asset	(8,500)	(8,500)
Equity Method investment, Purchase Price Adjustment, Inventory Profit Elimination	371	208
Other	(604)	(39)
KEMET's 34% interest of NEC TOKIN's equity	$ (4,698)	$ 19,341