Long-Term Debt Summary of Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2010 8.5% Senior Notes, Due 2012 [Member]	Mar. 31, 2012 Senior Secured Credit Facility [Member]		Mar. 31, 2011 Senior Secured Credit Facility [Member]		Mar. 31, 2012 Subordinated Debt [Member]	Mar. 31, 2011 Subordinated Debt [Member]	Mar. 31, 2012 Subordinated Debt [Member] 10% Senior Notes Due 2016 [Member]		Mar. 31, 2011 Subordinated Debt [Member] 10% Senior Notes Due 2016 [Member]		Mar. 31, 2012 Subordinated Debt [Member] 8.5% Senior Notes, Due 2012 [Member]	Mar. 31, 2011 Subordinated Debt [Member] 8.5% Senior Notes, Due 2012 [Member]	Mar. 31, 2012 Convertible Debt [Member] 5 1/2% Convertible Senior Subordinated Notes Due 2014 [Member]	Mar. 31, 2011 Convertible Debt [Member] 5 1/2% Convertible Senior Subordinated Notes Due 2014 [Member]	Jul. 02, 2009 Convertible Debt [Member] 5 1/2% Convertible Senior Subordinated Notes Due 2014 [Member]	Mar. 31, 2012 Foreign Seasonal Debt [Member]		Mar. 31, 2011 Foreign Seasonal Debt [Member]	Mar. 31, 2012 Long-term Debt [Member]		Mar. 31, 2011 Long-term Debt [Member]	Mar. 31, 2012 Notes Payable to Banks [Member]		Mar. 31, 2011 Notes Payable to Banks [Member]		Mar. 31, 2012 Line of Credit [Member]	Mar. 31, 2011 Line of Credit [Member]	Mar. 31, 2012 Letter of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding	$ 593,696				$ 290,000				$ 0		$ 0				$ 0		$ 0			$ 36,774			$ 281			$ 266,641						$ 6,742
Long-term debt, outstanding	1,203,035	1,116,562			0	[1]	148,000	[1]	621,189	617,756	615,189	[2]	611,756	[2]	6,000	6,000	115,000	115,000		88,226		0	4,088		4,399	374,532	[3]	231,407	[3]	7,239	4,859
Debt instrument, interest rate				8.50%	6.00%	[1],[4]					10.00%	[2]			8.50%		5.50%		5.50%	3.70%	[4]		6.60%	[4]		2.90%	[3],[4]
Short-term	374,532	231,407
Long-term debt current	7,050	784
Long-term debt	821,453	884,371
Long-term debt, total	828,503	885,155
Long-term Debt, by Maturity [Abstract]
2013	7,050				0	[1]			6,000		0	[2]			6,000		0			0			1,050			0	[3]
2014	89,494				0	[1]			0		0	[2]			0		0			88,226			1,268			0	[3]
2015	115,944				0	[1]			0		0	[2]			0		115,000			0			944			0	[3]
2016	546				0	[1]			0		0	[2]			0		0			0			546			0	[3]
2017	615,192				0	[1]			615,189		615,189	[2]			0		0			0			3			0	[3]
Later	277				0	[1]			0		0	[2]			0		0			0			277			0	[3]
Repayments of long-term debt	403,497	256,093	944,709
Unsued lines of credit	$ 600,438

[1] As of March 31, 2012, pursuant to Section 2.1 (A) (iv) of the Credit Agreement, the full Revolving Committed Amount was available based on the calculation of the lesser of the Revolving Committed Amount and the Working Capital Amount.

[2] Repayment of $615,189 is net of original issue discount of $19,811. Total repayment will be $635,000.

[3] Primarily foreign seasonal lines of credit.

[4] Weighted average rate for the twelve months ended March 31, 2012.