Net Sales by the Originating Geographic Area and Estimated End Market (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended																					6 Months Ended	12 Months Ended
	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Jan. 01, 2012	Sep. 29, 2013	Sep. 30, 2012	Oct. 02, 2011	Sep. 29, 2013 Aerospace	Sep. 30, 2012 Aerospace	Oct. 02, 2011 Aerospace	Sep. 29, 2013 Communication	Sep. 30, 2012 Communication	Oct. 02, 2011 Communication	Sep. 29, 2013 Defense And Security	Sep. 30, 2012 Defense And Security	Oct. 02, 2011 Defense And Security	Sep. 29, 2013 Industrial	Sep. 30, 2012 Industrial	Oct. 02, 2011 Industrial	Sep. 29, 2013 United States	Sep. 30, 2012 United States	Oct. 02, 2011 United States	Sep. 29, 2013 Europe	Sep. 30, 2012 Europe	Oct. 02, 2011 Europe	Apr. 01, 2012 Asia	Sep. 29, 2013 Asia	Sep. 30, 2012 Asia	Oct. 02, 2011 Asia	Sep. 29, 2013 Other Geographical [Member]	Sep. 30, 2012 Other Geographical [Member]	Oct. 02, 2011 Other Geographical [Member]
Segment Reporting Disclosure [Line Items]
Concentration of credit risk in major customer																		31.00%												11.00%
Net Sales	$ 250,383	$ 242,630	$ 235,333	$ 247,598	$ 263,074	$ 259,195	$ 249,306	$ 240,920	$ 975,944	$ 1,012,495	$ 835,854	$ 187,006	$ 212,293	$ 212,127	$ 278,126	$ 311,952	$ 148,792	$ 306,311	$ 286,430	$ 299,503	$ 204,501	$ 201,820	$ 175,432	$ 514,632	$ 501,257	$ 452,802	$ 142,343	$ 165,942	$ 186,505		$ 292,589	$ 320,430	$ 181,440	$ 26,380	$ 24,866	$ 15,107