Annual report pursuant to Section 13 and 15(d)

Restructuring (Details)

v2.4.0.6
Restructuring (Details) (USD $)
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Restructuring Charges      
Restructuring charges $ 18,719,000 $ 14,254,000 $ 7,171,000
Lease termination costs related to the closure of a sales office 600,000    
Reconciliation of restructuring liability      
Costs charged to expense 18,719,000 14,254,000 7,171,000
Tantalum
     
Restructuring Charges      
Restructuring charges 3,979,000 950,000 864,000
Reconciliation of restructuring liability      
Costs charged to expense 3,979,000 950,000 864,000
Manufacturing and sales office relocation costs
     
Restructuring Charges      
Restructuring charges 2,349,000 1,920,000 5,974,000
Reconciliation of restructuring liability      
Costs charged to expense 2,349,000 1,920,000 5,974,000
Costs paid or settled (1,782,000) (1,920,000) (5,974,000)
Balance at the end of the period 567,000    
Manufacturing and sales office relocation costs | China and Mexico
     
Restructuring Charges      
Restructuring charges   1,900,000  
Reconciliation of restructuring liability      
Costs charged to expense   1,900,000  
Manufacturing and sales office relocation costs | Bulgaria, China, Macedonia and Mexico
     
Restructuring Charges      
Restructuring charges 1,800,000    
Reconciliation of restructuring liability      
Costs charged to expense 1,800,000    
Personnel reduction costs
     
Restructuring Charges      
Restructuring charges 16,370,000 12,334,000 1,197,000
Workforce reductions and administrative overhead 4,900,000   1,500,000
Reconciliation of restructuring liability      
Balance at the beginning of the period 11,474,000 1,827,000 8,398,000
Costs charged to expense 16,370,000 12,334,000 1,197,000
Costs paid or settled (13,976,000) (2,592,000) (7,936,000)
Change in foreign exchange (359,000) (95,000) 168,000
Balance at the end of the period 13,509,000 11,474,000 1,827,000
Personnel reduction costs | Mexican operations
     
Restructuring Charges      
Restructuring charges 1,500,000    
Reconciliation of restructuring liability      
Costs charged to expense 1,500,000    
Personnel reduction costs | Landsberg, Germany
     
Restructuring Charges      
Restructuring charges 2,800,000    
Reconciliation of restructuring liability      
Costs charged to expense 2,800,000    
Personnel reduction costs | Weymouth, United Kingdom
     
Restructuring Charges      
Restructuring charges 2,900,000    
Reconciliation of restructuring liability      
Costs charged to expense 2,900,000    
Personnel reduction costs | Corporate headquarters
     
Restructuring Charges      
Restructuring charges 2,700,000    
Reconciliation of restructuring liability      
Costs charged to expense 2,700,000    
Personnel reduction costs | Portugal
     
Restructuring Charges      
Restructuring charges 1,100,000    
Reconciliation of restructuring liability      
Costs charged to expense 1,100,000    
Personnel reduction costs | Italy
     
Restructuring Charges      
Restructuring charges   6,100,000 800,000
Workforce reductions and administrative overhead   4,500,000  
Reversal of prior expenses primarily associated with CIGS plan     1,700,000
Number of employees who participated in the program     107
Reconciliation of restructuring liability      
Costs charged to expense   6,100,000 800,000
Personnel reduction costs | Nantong, China
     
Restructuring Charges      
Restructuring charges     600,000
Reconciliation of restructuring liability      
Costs charged to expense     600,000
Personnel reduction costs | Tantalum | Mexican operations
     
Restructuring Charges      
Restructuring charges   1,700,000  
Reconciliation of restructuring liability      
Costs charged to expense   1,700,000  
Personnel reduction costs | Innovation center
     
Restructuring Charges      
Workforce reductions and administrative overhead $ 500,000