Note 7 Line of Credit Facility (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Sep. 28, 2013
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum Borrowing Capacity		$ 300,000,000
Additional Credit Line		200,000,000
Facility Expiration Date		Mar. 16, 2017
Interest Rate Description		LIBOR or a base rate equal to Bank of America, N.A.'s announced prime rate, in each case plus a spread
Debt Issuance Cost	2,700,000
Amount Outstanding		0
Letters of Credit Outstanding, Amount		23,100,000
Line of Credit Facility, Remaining Borrowing Capacity		266,400,000
Foreign Line of Credit
Line of Credit Facility [Line Items]
Maximum Borrowing Capacity		184,000,000
Facility Expiration Date		Mar. 11, 2015
Amount Outstanding		0
Letter of Credit [Member] | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum Borrowing Capacity		$ 100,000,000