Consolidated Balance Sheets Balance Sheet Parenthetical (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014
Allowance for doubtful accounts	$ 32,203	$ 31,757
Preferred stock, shares authorized	20,030	20,030
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	87,408	87,353
Treasury stock, shares	12,948	13,264