Derivative Instruments and Hedging Activities (Details) (USD $)	3 Months Ended						3 Months Ended
	Dec. 31, 2011 Foreign Exchange Cash Flow Hedges [Member]	Jan. 01, 2011 Foreign Exchange Cash Flow Hedges [Member]	Dec. 31, 2011 Foreign Exchange Balance Sheet Derivative Contracts [Member]	Jan. 01, 2011 Foreign Exchange Balance Sheet Derivative Contracts [Member]	Dec. 31, 2011 Interest Rate Swap [Member]	Jan. 01, 2011 Interest Rate Swap [Member]	Dec. 31, 2011 Interest Rate Swap 1 [Member]	Dec. 31, 2011 Interest Rate Swap 2 [Member]	Dec. 31, 2011 Interest Rate Swap 3 [Member]	Dec. 31, 2011 Interest Rate Swap 4 [Member]	Dec. 31, 2011 Interest Rate Swaps and Forward Interest Rate Swaps [Member]	Jan. 01, 2011 Interest Rate Swaps and Forward Interest Rate Swaps [Member]	Dec. 31, 2011 Prepaid Expenses and Other Current Assets [Member]	Oct. 01, 2011 Prepaid Expenses and Other Current Assets [Member]	Dec. 31, 2011 Prepaid Expenses and Other Current Assets [Member] Designated as Hedging Instrument [Member]	Oct. 01, 2011 Prepaid Expenses and Other Current Assets [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Prepaid Expenses and Other Current Assets [Member] Designated as Hedging Instrument [Member] Foreign Exchange Cash Flow Hedges [Member]	Oct. 01, 2011 Prepaid Expenses and Other Current Assets [Member] Designated as Hedging Instrument [Member] Foreign Exchange Cash Flow Hedges [Member]	Dec. 31, 2011 Prepaid Expenses and Other Current Assets [Member] Designated as Hedging Instrument [Member] Interest Rate Swap [Member]	Oct. 01, 2011 Prepaid Expenses and Other Current Assets [Member] Designated as Hedging Instrument [Member] Interest Rate Swap [Member]	Dec. 31, 2011 Prepaid Expenses and Other Current Assets [Member] Not Designated as Hedging Instrument [Member] Foreign Exchange Balance Sheet Derivative Contracts [Member]	Oct. 01, 2011 Prepaid Expenses and Other Current Assets [Member] Not Designated as Hedging Instrument [Member] Foreign Exchange Balance Sheet Derivative Contracts [Member]	Dec. 31, 2011 Other Accrued Liabilities [Member]	Oct. 01, 2011 Other Accrued Liabilities [Member]	Dec. 31, 2011 Other Accrued Liabilities [Member] Designated as Hedging Instrument [Member]	Oct. 01, 2011 Other Accrued Liabilities [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Other Accrued Liabilities [Member] Designated as Hedging Instrument [Member] Foreign Exchange Cash Flow Hedges [Member]	Oct. 01, 2011 Other Accrued Liabilities [Member] Designated as Hedging Instrument [Member] Foreign Exchange Cash Flow Hedges [Member]	Dec. 31, 2011 Other Accrued Liabilities [Member] Designated as Hedging Instrument [Member] Interest Rate Swap [Member]	Oct. 01, 2011 Other Accrued Liabilities [Member] Designated as Hedging Instrument [Member] Interest Rate Swap [Member]	Dec. 31, 2011 Other Accrued Liabilities [Member] Not Designated as Hedging Instrument [Member] Foreign Exchange Balance Sheet Derivative Contracts [Member]	Oct. 01, 2011 Other Accrued Liabilities [Member] Not Designated as Hedging Instrument [Member] Foreign Exchange Balance Sheet Derivative Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value													$ 610,000	$ 968,000	$ 584,000	$ 746,000	$ 584,000	$ 746,000	$ 0	$ 0	$ 26,000	$ 222,000
Derivative liability, fair value																							641,000	1,658,000	641,000	1,658,000	214,000	1,041,000	427,000	617,000	0	0
Derivative [Line Items]
Gross notional amount of foreign exchange derivatives outstanding	35,900,000	28,200,000	20,000,000	39,000,000
Net notional amount of foreign exchange derivatives	34,200,000	24,000,000	100,000	100,000
Net market value of the foreign currency exchange contracts	400,000	(500,000)	100,000	100,000
Net market value of the foreign currency exchange contracts, Liabilities	200,000	(600,000)
Net market value of the foreign currency exchange contracts, Assets	600,000	100,000
Pretax amounts recognized in accumulated other comprehensive income [Roll Forward]
Unrealized net (loss) gain in AOCI, pretax	(365,000)	(384,000)									(617,000)	(1,406,000)
Net loss reclassified into Revenue (effective portion)	402,000	159,000
Net loss reclassified into Revenue upon the removal of a hedge designation on an underlying foreign currency transaction that was cancelled	0	7,000
Net gain (loss) recognized in OCI (effective portion)	377,000	(51,000)									14,000	8,000
Unrealized net (loss) gain in AOCI, pretax	414,000	(269,000)									(427,000)	(1,101,000)
Net loss reclassified into interest expense (effective portion)											176,000	297,000
Recognized in earnings as a result of the ineffectiveness of cash flow hedges	100,000	100,000
Amount projected to be reclassified from Accumulated Other Comprehensive Income into earnings	100,000	(400,000)
Maximum remaining maturity of any forward or optional contract derivatives (in years)	2.6Y	3.6Y
Notional amount of interest rate swaps derivatives outstanding					40,000,000	24,000,000	13,000,000	11,000,000	6,000,000	10,000,000
Reference Rate (in hundredths)							4.24%	1.02%	1.06%	1.08%
Basis Spread on variable rate (in hundredths)							0.45%	0.45%	0.45%	0.45%
Market value of interest rate derivatives											(400,000)	(1,100,000)
Weighted average interest rate (in hundredths)					2.09%	3.94%
Effective interest rate on credit facility borrowings (in hundredths)					2.54%	4.39%
Start Date							Jul. 25, 2008	Dec. 07, 2011	Dec. 20, 2011	Dec. 29, 2011
End Date							Jul. 25, 2012	Sep. 07, 2012	Sep. 20, 2012	Sep. 28, 2012
Net (loss) gain recognized in other (expense) income, net [Abstract]
Net (loss) gain recognized in Other (expense) income, net			$ (6,000)	$ 129,000