Property and Equipment (Details) (USD $)	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Property and Equipment
Property and equipment at cost, gross	$ 232,805,000	$ 242,166,000
Accumulated depreciation	(158,941,000)	(154,140,000)
Property and equipment, net	73,864,000	88,026,000
Depreciation expense related to property and equipment, including assets under capital leases	26,452,000	29,548,000	26,651,000
Prepaid expenses and other current assets
Property and Equipment
Carrying value of property			2,400,000
Selling, general and administrative expenses
Property and Equipment
Non-cash impairment charge			3,400,000
Land and buildings
Property and Equipment
Property and equipment at cost, gross	4,029,000	5,565,000
Carrying value of properties held for sale			5,800,000
Equipment, furniture and fixtures
Property and Equipment
Property and equipment at cost, gross	204,298,000	210,172,000
Leasehold improvements
Property and Equipment
Property and equipment at cost, gross	$ 24,478,000	$ 26,429,000