Fair Value Measurements (Details) (USD $)	6 Months Ended
	Mar. 30, 2013	Sep. 29, 2012
Fair Value Measurements
Total fair value of derivatives	$ (10,130,000)	$ (16,603,000)
Carrying value of long-term debt	282,700,000	473,700,000
Period of reset of debt variable interest rates	30 days
Recurring basis | Level 2
Fair Value Measurements
Total fair value of derivatives	(10,130,000)	(16,603,000)
Recurring basis | Level 2 | Interest rate swaps
Fair Value Measurements
Total fair value of derivatives	(7,349,000)	(9,019,000)
Recurring basis | Level 2 | Cross currency swap
Fair Value Measurements
Total fair value of derivatives	(2,667,000)	(7,242,000)
Recurring basis | Level 2 | Coffee futures
Fair Value Measurements
Total fair value of derivatives	$ (114,000)	$ (342,000)