Annual report pursuant to Section 13 and 15(d)

Segment and Geographic Information - Narrative (Details)

v3.20.1
Segment and Geographic Information - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
manufacturing_site
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Mar. 31, 2020
USD ($)
business_group
manufacturing_site
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Segment Reporting [Abstract]                      
Number of business groups | business_group                 3    
Segment and geographic information                      
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 $ 19,710 $ 1,660 $ (992)
Assets $ 1,393,097       $ 1,318,095       1,393,097 1,318,095  
Operating income (loss) 11,728 $ 28,648 $ 49,090 $ 58,400 54,057 $ 61,616 $ 50,000 $ 35,176 147,866 200,849 112,852
Depreciation and amortization                 62,819 52,628 50,661
Solid Capacitors                      
Segment and geographic information                      
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 1,538 235 689
Assets $ 888,046       794,402       $ 888,046 794,402  
Number of manufacturing sites | manufacturing_site 9               9    
Operating income (loss)                 $ 345,245 348,150 234,473
Depreciation and amortization                 33,462 28,795 27,329
Film and Electrolytic                      
Segment and geographic information                      
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 7,780 (93) (3,356)
Assets $ 207,601       219,711       $ 207,601 219,711  
Number of manufacturing sites | manufacturing_site 8               8    
Operating income (loss)                 $ (14,209) 8,183 3,622
Depreciation and amortization                 10,142 9,763 10,918
Electro-magnetic, Sensors & Actuators [Member]                      
Segment and geographic information                      
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 0 0 1,272
Assets $ 220,107       234,419       $ 220,107 234,419  
Number of manufacturing sites | manufacturing_site 4               4    
Operating income (loss)                 $ 13,101 22,546 15,694
Depreciation and amortization                 7,379 5,226 4,407
Corporate                      
Segment and geographic information                      
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 10,392 1,518 403
Assets $ 77,343       $ 69,563       77,343 69,563  
Operating income (loss)                 (196,271) (178,030) (140,937)
Depreciation and amortization                 $ 11,836 $ 8,844 $ 8,007