Annual report pursuant to Section 13 and 15(d)

Restructuring - Rollforward (Details)

v3.19.1
Restructuring - Rollforward (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Reconciliation of restructuring liability      
Costs charged to expense $ 8,779 $ 14,843 $ 5,404
Personnel reduction costs      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve, Accrual Adjustment   0  
Reconciliation of restructuring liability      
Balance at the beginning of the period 9,629 999 976
Costs charged to expense 2,823 12,587 2,214
Costs paid or settled (10,329) (3,901) (2,130)
Change in foreign exchange (258) 147 (61)
Balance at the end of the period 1,865 9,629 999
Personnel reduction costs      
Reconciliation of restructuring liability      
Costs charged to expense   12,384  
Manufacturing and sales office relocation costs      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve, Accrual Adjustment   312  
Reconciliation of restructuring liability      
Balance at the beginning of the period 330 406 0
Costs charged to expense 5,956 2,256 3,190
Costs paid or settled (5,957) (2,662) (2,784)
Change in foreign exchange (13) 18 0
Balance at the end of the period 316 330 406
Employee Relocation      
Reconciliation of restructuring liability      
Costs charged to expense   200  
Film and Electrolytic      
Reconciliation of restructuring liability      
Costs charged to expense 2,717 $ 5,788 3,738
Film and Electrolytic | Personnel reduction costs      
Reconciliation of restructuring liability      
Costs charged to expense $ 300    
Film and Electrolytic | Manufacturing and sales office relocation costs      
Reconciliation of restructuring liability      
Costs charged to expense     $ 600