Commitments and Contingencies (Details 2) (USD $)		12 Months Ended
	Sep. 27, 2014	Sep. 27, 2014 Manufacturing Facility [Member] item	Sep. 27, 2014 Burlington Facility [Member] sqft	Jun. 30, 2012 Burlington Facility [Member]
Lease Commitments
Initial term of capital lease		15 years
Number of additional optional renewals of capital lease		6
Capital leases optional renewal term		5 years
Area of leased property recorded as an asset with related financing obligation			425,000
Pre-existing fair value capitalized				$ 4,100,000
Capital Leases
2015	3,838,000
2016	3,838,000
2017	3,838,000
2018	3,838,000
2019	3,838,000
Thereafter	27,820,000
Total	47,010,000
Less: amount representing interest	(14,886,000)
Present value of future minimum lease payments	32,124,000
Operating Leases
2015	15,856,000
2016	12,457,000
2017	9,867,000
2018	7,402,000
2019	3,736,000
Thereafter	26,736,000
Total	76,054,000
Subleases
2015	(939,000)
2016	(783,000)
2017	(633,000)
2018	(585,000)
2019	(562,000)
Thereafter	(1,429,000)
Total minimum income	(4,931,000)
Financing Obligations
2015	8,828,000
2016	9,773,000
2017	9,773,000
2018	9,868,000
2019	9,956,000
Thereafter	105,833,000
Total	$ 154,031,000