Indebtedness (Revolving Credit Agreement) (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended
	Sep. 28, 2013 Revolving credit agreement [Member]	Sep. 29, 2012 Revolving credit agreement [Member]	Sep. 28, 2013 Revolving credit agreement [Member]	Sep. 29, 2012 Revolving credit agreement [Member]	Mar. 23, 2012 Revolving credit agreement [Member]	Mar. 23, 2012 Revolving credit agreement [Member] Weighted-average overnight federal fund rates [Member] Fixed component [Member]	Mar. 23, 2012 Revolving credit agreement [Member] Weighted-average overnight federal fund rates [Member] Variable component [Member] Minimum [Member]	Mar. 23, 2012 Revolving credit agreement [Member] Weighted-average overnight federal fund rates [Member] Variable component [Member] Maximum [Member]	Mar. 23, 2012 Revolving credit agreement [Member] LIBOR [Member] Minimum [Member]	Mar. 23, 2012 Revolving credit agreement [Member] LIBOR [Member] Maximum [Member]	Mar. 23, 2012 Swing-line loans [Member]	Sep. 28, 2013 Letters of credit [Member]	Mar. 23, 2012 Letters of credit [Member]
Revolving Credit Agreement [Line Items]
Maximum borrowing capacity					$ 400,000,000						$ 25,000,000		$ 25,000,000
Additional borrowing capacity with the approval of the lenders					100,000,000
Basis spread on variable rate						0.50%	0.00%	0.75%	0.875%	1.75%
Maximum amount outstanding	196,185,000	214,530,000	208,675,000	214,530,000
Weighted-average amount outstanding	187,704,000	206,331,000	190,415,000	198,503,000
Weighted-average interest rate	1.50%	1.60%	1.60%	1.50%
Amount outstanding												4,050,000
Unused commitments	$ 222,945,000		$ 222,945,000