Schedule II-Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
Allowance for doubtful accounts:
Valuation and Qualifying Accounts
Balance at Beginning of Period	$ 2,750,000	$ 3,404,000	$ 1,314,000
Acquisitions (Dispositions)		(299,000)	1,115,000
Charged to Costs and Expenses	689,000	3,197,000	2,584,000
Deductions	553,000	3,552,000	1,609,000
Balance at End of Period	2,886,000	2,750,000	3,404,000
Sales returns reserve:
Valuation and Qualifying Accounts
Balance at Beginning of Period	31,767,000	18,302,000	12,742,000
Charged to Costs and Expenses	79,747,000	107,436,000	64,457,000
Deductions	80,760,000	93,971,000	58,897,000
Balance at End of Period	30,754,000	31,767,000	18,302,000
Warranty reserve:
Valuation and Qualifying Accounts
Balance at Beginning of Period	20,218,000	14,728,000	6,694,000
Charged to Costs and Expenses	6,948,000	37,390,000	35,450,000
Deductions	19,362,000	31,900,000	27,416,000
Balance at End of Period	7,804,000	20,218,000	14,728,000
Warranty recoveries from suppliers	$ 800,000	$ 8,300,000	$ 0