Annual report pursuant to Section 13 and 15(d)

Segment and Geographic Information Segment and Geographic Information - Disaggregated Revenue (Details)

v3.19.1
Segment and Geographic Information Segment and Geographic Information - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax $ 1,382,818 $ 1,200,181 $ 757,338
Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 935,838 771,240 575,110
Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 206,240 201,977 182,228
Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 240,740 226,964 0
EMEA [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 315,535 277,898 237,437
EMEA [Member] | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 189,992 156,169 128,617
EMEA [Member] | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 122,956 119,649 108,820
EMEA [Member] | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 2,587 2,080 0
Americas [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 337,842 259,105 224,056
Americas [Member] | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 297,167 227,582 202,812
Americas [Member] | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 30,462 22,634 21,244
Americas [Member] | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 10,213 8,889 0
JPKO [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 196,101 183,191 7,081
JPKO [Member] | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 37,496 36,698 5,834
JPKO [Member] | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 899 772 1,247
JPKO [Member] | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 157,706 145,721 0
Asia Pacific [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 533,340 479,987 288,764
Asia Pacific [Member] | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 411,183 350,791 237,847
Asia Pacific [Member] | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 51,923 58,922 50,917
Asia Pacific [Member] | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 70,234 70,274 0
OEM      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 598,306 563,495 246,397
OEM | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 290,058 262,097 162,411
OEM | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 81,704 86,049 83,986
OEM | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 226,544 215,349 0
Distributor      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 584,618 470,324 354,639
Distributor | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 475,190 366,569 275,591
Distributor | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 100,113 92,708 79,048
Distributor | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 9,315 11,047 0
EMS      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 199,894 166,362 156,302
EMS | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 170,590 142,574 137,108
EMS | Film and Electrolytic [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 24,423 23,220 19,194
EMS | Electro-magnetic, Sensors & Actuators [Member]      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 4,881 568 0
Tantalum | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax 563,255 495,114 342,184
Ceramics | Solid Capacitors      
Segment and geographic information      
Revenue from Contract with Customer, Excluding Assessed Tax $ 372,583 $ 276,126 $ 232,926