Segment Reporting (Schedule Of Revenues By Product Line And Services) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended									12 Months Ended
	Dec. 31, 2011		Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2010	Sep. 26, 2010	Jun. 27, 2010	Mar. 28, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Revenues	$ 236,800	[1]	$ 211,800	$ 221,100	$ 178,500	$ 200,000	$ 168,700	$ 161,200	$ 149,200	$ 848,181	$ 679,111	$ 658,205
Systems And Solutions [Member]
Segment Reporting Information [Line Items]
Revenues										423,434	381,618	368,188
Printer And Media [Member]
Segment Reporting Information [Line Items]
Revenues										175,408	163,640	151,415
Service [Member]
Segment Reporting Information [Line Items]
Revenues										143,127	133,853	138,602
Voice Solutions [Member]
Segment Reporting Information [Line Items]
Revenues										$ 106,212

[1] Includes a $20.9 million tax expense in 2011. For the year ended December 31, 2011, a valuation allowance was required against a portion of our U.S. deferred tax assets and we recorded an increase of $20.9 million in our valuation allowance during the year ended December 31, 2011. This increase was reflected as an expense in the fourth quarter of 2011. There were no similar charges in any of the other years presented.