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Consolidated Condensed Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Sep. 30, 2012
Mar. 31, 2012
Accounts receivable, allowance for doubtful accounts $ 9,406 $ 10,022
Common Stock, par value $ 0.01 $ 0.01
Common Stock, shares authorized 135,000,000 135,000,000
Common Stock, shares issued 52,930,206 52,247,014
Common Stock, shares outstanding 48,483,321 47,800,129
Treasury stock, shares 4,446,885 4,446,885