Debt (Details) (USD $)	3 Months Ended			3 Months Ended						3 Months Ended				0 Months Ended		0 Months Ended
	Oct. 27, 2012 Integer	Jul. 28, 2012	Jan. 21, 2011 Minimum incremental_facility	Oct. 27, 2012 Credit Agreement	Oct. 27, 2012 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021	Jul. 28, 2012 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021	Oct. 27, 2012 Capital Leases	Jul. 28, 2012 Capital Leases	Jun. 04, 2010 Revolving Credit Facility Standby Letters of Credit	Oct. 27, 2012 Revolving Credit Facility Credit Agreement	Jun. 04, 2010 Revolving Credit Facility Credit Agreement	Oct. 27, 2012 Revolving Credit Facility Credit Agreement Standby Letters of Credit	Jan. 21, 2011 Revolving Credit Facility Incremental Facilities	Oct. 27, 2012 Revolving Credit Facility Amended Credit Agreement	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Minimum	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Maximum	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Letter of Credit Minimum	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Letter of Credit Maximum	Oct. 27, 2012 Revolving Credit Facility Amended Credit Agreement Standby Letters of Credit	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Standby Letters of Credit Minimum	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Standby Letters of Credit Maximum	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Federal Fund Rate	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Administrative Agent Base Rate	Jan. 21, 2011 Revolving Credit Facility Amended Credit Agreement Eurodollar Rate
Long-term Debt and Capital Lease Obligations
Debt and Capital Lease Obligations	$ 187,555,000	$ 187,574,000			$ 187,500,000	$ 187,500,000	$ 55,000	$ 74,000
Less: current portion	(55,000)	(74,000)
Long-term debt	187,500,000	187,500,000
Revolving Credit Facility
Term of Credit Agreement										5 years
Borrowing capacity									100,000,000	0	225		75,000,000
Amended Credit Agreement, Amount of Incremental Facilities to Enter			1
Pledge of equity by material domestic subsidiaries															100.00%
Pledge of non voting equity by first tier material foreign subsidiaries															100.00%
Pledge of voting equity by material foreign subsidiaries															65.00%
Debt instrument basis spread on variable rate																							0.50%	1.25%	2.25%
Percentage Used In Denominator For Interest Rate In Hundredths																									1.00%
Unutilized Commitment fee (in hundredths)														0.50%		0.50%	0.625%	1.00%	1.375%	2.25%	2.00%	2.75%
Debt Instrument, Covenant Compliance, Consolidated Leverage Ratio, Maximum				3.00
Number Of Quarters Consolidated Leverage Ratio Is Based	4
Debt Instrument, Covenant Compliance, Consolidated Interest Ratio, Maximum				2.75
Letters of credit outstanding amount												44,100,000
Additional borrowing availability										$ 180,900,000
Interest rate (in hundredths)					7.125%