Annual report pursuant to Section 13 and 15(d)

Equity Method Investments - Reconciliation (Details)

v3.19.1
Equity Method Investments - Reconciliation (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Mar. 31, 2018
Schedule of Equity Method Investments [Line Items]    
Equity method investments $ 12,925 $ 12,016
Nippon Yttrium Co., Ltd (NYC)    
Schedule of Equity Method Investments [Line Items]    
Equity method investments 8,215 8,148
NT Sales Co., Ltd (NTS)    
Schedule of Equity Method Investments [Line Items]    
Equity method investments 1,218 998
Novasentis    
Schedule of Equity Method Investments [Line Items]    
Equity method investments 977 2,870
KEMET Jianghai [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity method investments $ 2,515 $ 0