Segment Information (Revenue by Geographic Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Mar. 29, 2014		Mar. 30, 2013		Mar. 29, 2014		Mar. 30, 2013
Revenue	$ 328,700		$ 313,949		$ 653,625		$ 633,700
Americas
Revenue	134,375	[1]	118,150	[1]	273,253	[1]	250,809	[1]
Europe
Revenue	128,018	[2]	118,841	[2]	255,062	[2]	238,495	[2]
Pacific Rim
Revenue	36,662		39,289		70,554		77,911
Japan
Revenue	29,645		37,669		54,756		66,485
United States
Revenue	126,300		111,700		255,000		228,600
Germany
Revenue	$ 47,600		$ 39,600		$ 90,600		$ 81,700

[1] Includes revenue in the United States totaling $126.3 million and $111.7 million for the quarters ended March 29, 2014 and March 30, 2013, respectively, and $255.0 million and $228.6 million for the six months ended March 29, 2014 and March 30, 2013, respectively.

[2] Includes revenue in Germany totaling $47.6 million and $39.6 million for the quarters ended March 29, 2014 and March 30, 2013, respectively, and $90.6 million and $81.7 million for the six months ended March 29, 2014 and March 30, 2013, respectively.