Annual report pursuant to Section 13 and 15(d)

Segment and Geographic Information Segment and Geographic Information - Summarized Financial Information (Details)

v3.20.1
Segment and Geographic Information Segment and Geographic Information - Summarized Financial Information (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Segment and geographic information                      
Assets $ 1,393,097       $ 1,318,095       $ 1,393,097 $ 1,318,095  
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property                 (800) 1,000 $ 1,200
Asset Impairment Charges                 18,900 700 200
Restructuring charges                 8,882 8,779 14,843
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 19,710 1,660 (992)
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
Additions to Other Assets, Amount                 146,331 146,056 65,004
Solid Capacitors                      
Segment and geographic information                      
Assets 888,046       794,402       888,046 794,402  
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property                     (600)
Restructuring charges                 517 4,922 983
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 1,538 235 689
Operating income (loss)                 345,245 348,150 234,473
Depreciation and amortization                 33,462 28,795 27,329
Additions to Other Assets, Amount                 102,600 80,700 31,249
Film and Electrolytic                      
Segment and geographic information                      
Assets 207,601       219,711       207,601 219,711  
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property                     (3,600)
Restructuring charges                 3,458 2,717 5,788
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 7,780 (93) (3,356)
Operating income (loss)                 (14,209) 8,183 3,622
Depreciation and amortization                 10,142 9,763 10,918
Additions to Other Assets, Amount                 9,900 16,000 12,651
Electro-magnetic, Sensors & Actuators [Member]                      
Segment and geographic information                      
Assets 220,107       234,419       220,107 234,419  
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property                     (1,300)
Restructuring charges                 3,516 452 3,343
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 0 0 1,272
Operating income (loss)                 13,101 22,546 15,694
Depreciation and amortization                 7,379 5,226 4,407
Additions to Other Assets, Amount                 10,600 13,400 8,481
Corporate                      
Segment and geographic information                      
Assets $ 77,343       $ 69,563       77,343 69,563  
Asset Impairment Charges                 8,900    
Restructuring charges                 1,391 688 4,729
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down                 10,392 1,518 403
Operating income (loss)                 (196,271) (178,030) (140,937)
Depreciation and amortization                 11,836 8,844 8,007
Additions to Other Assets, Amount                 $ 23,231 $ 35,956 $ 12,623