CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data	Mar. 31, 2011	Mar. 31, 2010	Oct. 31, 2009
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances (in dollars)	$ 42,900	$ 72,535	$ 37,191
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000	5,000	5,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	150,000	150,000	150,000
Common stock, shares issued	86,119	83,977	81,925
Common stock, shares outstanding	86,119	83,977	81,925