Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Mar. 31, 2011
Current assets
Allowance for doubtful accounts	$ 16,104	$ 13,388
Shareholders' equity
Ordinary shares, no par value
Ordinary shares, issued	745,251,473	830,745,010
Ordinary shares, outstanding	695,012,119	756,993,938
Treasury stock, shares	50,239,354	73,751,072

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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