Discontinued Operations (Details) (USD $)	3 Months Ended	12 Months Ended
	Jul. 07, 2013 restaurant	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges		$ (570,000)	$ (3,874,000)	$ (3,112,000)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(5,894,000)	(31,456,000)	(10,453,000)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share		$ (0.14)	$ (0.73)	$ (0.24)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share		$ (0.14)	$ (0.70)	$ (0.23)
Discontinued Operation - Distribution Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reversal of Tenant Improvement Allowances and Deferred Rent			400,000
Restructuring Reserve		548,000	1,318,000	697,000
Revenue		0	37,743,000	616,982,000
Operating loss before income tax benefit		(1,276,000)	(6,446,000)	(8,777,000)
Accelerated depreciation			1,900,000	6,000,000
Accelerated future lease commitments		300,000	1,600,000	700,000
Disposal Group, Including Discontinued Operation, Vendor Contract Exit Costs			1,200,000	1,100,000
Workers' Compensation Liability		900,000	1,300,000
Restructuring Reserve, Accrual Adjustment		285,000	119,000
Cash paid to settle restructuring reserve		(1,055,000)	(1,344,000)
2013 Qdoba Closures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of Terminated Lease Agreements		19
Asset impairment charges		(2,170,000)	(22,239,000)	0
Disposal Group, Including Discontinued Operation, Future Lease Commitments Net of Straightline Rent and Tenant Improvement Reversals		(4,536,000)	(10,301,000)	0
Reversal of Tenant Improvement Allowances and Deferred Rent			4,300,000
Disposal group, Including Discontinued Operations, Brokerage Commissions		(652,000)	0	0
Restructuring Reserve		5,737,000	10,712,000	0
Restructuring Reserve Addition		0	14,072,000
Revenue		0	28,036,000	35,731,000
Operating loss before income tax benefit	22,600,000	0	(8,961,000)	(8,327,000)
Number of Restaurants	62
Restructuring Reserve, Accrual Adjustment		4,536,000	530,000
Cash paid to settle restructuring reserve		(9,511,000)	(3,890,000)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		(8,247,000)	(44,576,000)	(8,327,000)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$ 0.52
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$ 0.50
Disposal Group, Including Discontinued Operation, Other Expense		(889,000)	(3,075,000)	0
Locations Subleased at a Loss		5
Locations Marketed for Sublease		26
Contract Termination [Member] | Discontinued Operation - Distribution Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring Reserve Addition		$ 0	$ 1,846,000