Consolidated Balance Sheets Balance Sheet Parenthetical (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
Allowance for Doubtful Accounts Receivable	$ 33,236	$ 28,650
Preferred Stock, Shares Authorized	20,030	20,030
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	200,000	200,000
Common stock, shares, issued	87,250	87,135
Treasury stock, shares	13,607	14,077