CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock $.01 Par Value	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interest
Balance at Mar. 31, 2010	$ 807,422	$ 330	$ 578,046	$ 1,699,176	$ (821,086)	$ (657,872)	$ 8,828
Balance (in shares) at Mar. 31, 2010		33,047,018
Increase (Decrease) in Stockholders' Equity
Comprehensive income	347,720			313,175	34,009		536
Exercise of stock options	13,818		(5,622)			19,440
Exercise of stock options (in shares)		251,401
Restricted stock grants			(7,057)			7,057
Restricted stock grants (in shares)		88,585
Share-based compensation	9,740		9,740
Performance shares issued net of treasury stock withheld	(6,504)		(17,193)			10,689
Performance shares issued net of treasury stock withheld (in shares)		139,342
Tax benefit related to share based plans and other	1,111		1,111
Dividends paid	(6,700)			(6,700)
Employee benefit plans and other	(485)	5	254			(744)
Employee benefit plans and other (in shares)		(7,274)
Balance at Mar. 31, 2011	1,166,122	335	559,279	2,005,651	(787,077)	(621,430)	9,364
Balance (in shares) at Mar. 31, 2011		33,519,072
Increase (Decrease) in Stockholders' Equity
Comprehensive income	139,683			262,612	(123,521)		592
Exercise of stock options	5,709		(2,580)			8,289
Exercise of stock options (in shares)		107,944
Restricted stock grants			(17,159)			17,159
Restricted stock grants (in shares)		201,429
Share-based compensation	6,724		6,724
Treasury stock purchased	(49,991)					(49,991)
Treasury stock purchased (in shares)		(742,000)
Performance shares issued net of treasury stock withheld	(2,806)		(8,752)			5,946
Performance shares issued net of treasury stock withheld (in shares)		73,685
Tax benefit related to share based plans and other	(1,173)		(1,173)
Dividends paid	(26,552)			(26,552)
Employee benefit plans and other	(965)	(3)	1,582			(2,544)
Employee benefit plans and other (in shares)		(17,722)
Balance at Mar. 31, 2012	1,236,751	332	537,921	2,241,711	(910,598)	(642,571)	9,956
Balance (in shares) at Mar. 31, 2012		33,142,408
Increase (Decrease) in Stockholders' Equity
Comprehensive income	354,535			271,805	82,294		436
Exercise of stock options	5,461		(1,552)			7,013
Exercise of stock options (in shares)		93,617
Restricted stock grants			(8,429)			8,429
Restricted stock grants (in shares)		82,409
Share-based compensation	12,025		12,025
Treasury stock purchased	(59,511)					(59,511)
Treasury stock purchased (in shares)		(1,003,938)
Performance shares issued net of treasury stock withheld	(1,460)		(5,463)			4,003
Performance shares issued net of treasury stock withheld (in shares)		44,964
Tax benefit related to share based plans and other	(2,474)		(2,474)
Dividends paid	(30,033)			(30,033)
Employee benefit plans and other	(2,733)	(9)	2,109			(4,833)
Employee benefit plans and other (in shares)		(41,165)
Balance at Mar. 31, 2013	$ 1,512,561	$ 323	$ 534,137	$ 2,483,483	$ (828,304)	$ (687,470)	$ 10,392
Balance (in shares) at Mar. 31, 2013		32,318,295