Annual report pursuant to Section 13 and 15(d)

Supplemental Balance Sheets and Statements of Operations Detail (Details)

v2.4.0.6
Supplemental Balance Sheets and Statements of Operations Detail (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Accounts receivable:      
Trade $ 115,082 $ 122,413  
Allowance for doubtful accounts (1,255) (1,685)  
Ship-from-stock and debit (14,116) (11,988)  
Returns (1,421) (1,662)  
Rebates (1,071) (1,113)  
Price protection (376) (520)  
Other (279) (495)  
Accounts receivable 96,564 104,950  
Inventories:      
Raw materials and supplies 84,852 86,845  
Work in process 70,522 72,411  
Finished goods 68,705 70,122  
Inventories, gross 224,079 229,378  
Inventory reserves (18,464) (17,144)  
Inventories, net 205,615 212,234  
Allowance for commitments related to accounts receivables
     
Changes in allowance for accounts receivable and inventory reserve      
Balance at the beginning of the period 17,463 17,335 13,825
Charged to operations 82,738 71,462 69,086
Write-offs (81,621) (71,237) (65,576)
Other (62) (97)  
Balance at the end of the period 18,518 17,463 17,335
Inventory reserves
     
Changes in allowance for accounts receivable and inventory reserve      
Balance at the beginning of the period 17,144 15,464 19,918
Costs charged to expense 3,145 9,941 9,300
Write-offs (1,488) (8,253) (14,452)
Other (337) (8) 698
Balance at the end of the period $ 18,464 $ 17,144 $ 15,464