Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges (Details)

v3.10.0.1
Restructuring Charges (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Restructuring Charges          
Restructuring charges $ 0 $ (96) $ 1,393 $ (96) $ 3,006
Reconciliation of restructuring liability          
Costs charged to expense 0 (96) 1,393 $ (96) $ 3,006
Employee Severance          
Restructuring Charges          
Business Acquisition, Planned Restructuring Activities, Description       0 0
Restructuring charges 0 (84) 873 $ (79) $ 1,111
Reconciliation of restructuring liability          
Beginning of period 4,170 9,629 798 9,629 999
Costs charged to expense 0 (84) 873 (79) 1,111
Costs paid or settled (1,313)   (179) (6,449) (636)
Change in foreign exchange (20)   2 (264) 20
End of period 2,837 4,170 1,494 2,837 $ 1,494
Employee Severance | Corporate, Non-Segment [Member]          
Restructuring Charges          
Restructuring and Related Cost, Incurred Cost 0        
Restructuring and Related Cost, Cost Incurred to Date 2,655     2,655  
Restructuring and Related Cost, Expected Cost 2,655     2,655  
Employee Severance | Solid Capacitors          
Restructuring Charges          
Restructuring and Related Cost, Incurred Cost 0        
Restructuring and Related Cost, Cost Incurred to Date 0     0  
Restructuring and Related Cost, Expected Cost 897     897  
Manufacturing Relocation 1 [Member]          
Reconciliation of restructuring liability          
Costs paid or settled 0     0  
Facility Closing [Member] | Corporate, Non-Segment [Member]          
Restructuring Charges          
Restructuring and Related Cost, Incurred Cost 0        
Restructuring and Related Cost, Cost Incurred to Date 909     909  
Restructuring and Related Cost, Expected Cost 909     909  
Facility Closing [Member] | Solid Capacitors          
Restructuring Charges          
Restructuring and Related Cost, Incurred Cost 0        
Restructuring and Related Cost, Cost Incurred to Date 0     0  
Restructuring and Related Cost, Expected Cost 2,098     $ 2,098  
Manufacturing Relocation          
Restructuring Charges          
Business Acquisition, Planned Restructuring Activities, Description       0 314
Restructuring charges 0 (12) 520 $ 0 $ 1,895
Reconciliation of restructuring liability          
Beginning of period 317 330 314 330 406
Costs charged to expense 0 (12) 520 0 1,895
Costs paid or settled     (520)   (2,301)
Change in foreign exchange (7)   (2) (20) (2)
End of period $ 310 $ 317 $ 312 310 $ 312
Manufacturing Relocation | FLORIDA          
Restructuring Charges          
Restructuring charges       900  
Reconciliation of restructuring liability          
Costs charged to expense       900  
Manufacturing Relocation | Tennessee          
Restructuring Charges          
Restructuring charges       300  
Reconciliation of restructuring liability          
Costs charged to expense       300  
Manufacturing Relocation | Mexico | K-Salt          
Restructuring Charges          
Restructuring charges       600  
Reconciliation of restructuring liability          
Costs charged to expense       600  
Manufacturing Relocation | Victoria Mexico [Member] | Solid Capacitors          
Restructuring Charges          
Restructuring accrual adjustment       $ 100