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Valuation and Qualifying Accounts (Detail) (Allowance for Doubtful Accounts, USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Allowance for Doubtful Accounts
      
Valuation Allowance [Line Items]      
Balance at Beginning of Period $ 46,332 $ 49,921 $ 50,677
Additions at Cost 1,399 900 666
Deductions 11,994 [1] 4,489 [2] 1,422 [3]
Balance at End of Period $ 35,737 $ 46,332 $ 49,921
[1] Of this amount, $3,151 represents the collections from one customer located in Mexico and $8,843 represents accounts receivable amounts considered uncollectible and removed from accounts receivable with an offsetting reduction to the allowance for doubtful accounts.
[2] Of this amount, $3,852 is related to the revaluation of the allowance for doubtful accounts related to Venezuelan receivables and $637 related to receivables considered uncollectible and removed from accounts receivable by reducing the allowance for doubtful accounts.
[3] Of this amount, $1,000 represents the collections from one customer located in Mexico and $422 represents accounts receivable amounts considered uncollectible and removed from accounts receivable by reducing the allowance for doubtful accounts.