Income Taxes (Details 4)	3 Months Ended	12 Months Ended
	Sep. 28, 2013 USD ($)	Sep. 28, 2013 USD ($)	Sep. 29, 2012 USD ($)	Sep. 24, 2011 USD ($)	Sep. 28, 2013 CAD	Sep. 25, 2010 USD ($)	Sep. 28, 2013 Capital loss carryforwards USD ($)
Income Taxes
Carryforward amount	$ 17,700,000	$ 17,700,000
Income Taxes
Capital loss carryforwards							11,500,000
Valuation allowance - capital loss carryforward	1,418,000	1,418,000	1,418,000
Unrecognized tax benefits	23,283,000	23,283,000	23,956,000	24,419,000		5,480,000
Unrecognized tax benefits that would impact effective tax rate	19,700,000	19,700,000
Maximum amount of unrecognized tax benefit indemnification	16,600,000	16,600,000			37,900,000
Accrued interest and penalties	2,000,000	2,000,000	600,000
Unrecognized tax benefits released due to the expiration of the statute of limitations	1,500,000	3,820,000	140,000
Interest and penalties included in the income tax expense		$ 400,000	$ 200,000	$ 300,000