Segment Reporting (Schedule Of Revenues By Product Lines) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Apr. 01, 2012	Apr. 03, 2011
Segment Reporting Information [Line Items]
Revenues	$ 179,678	$ 178,518
Systems And Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	81,806	90,380
Printer And Media [Member]
Segment Reporting Information [Line Items]
Revenues	35,527	43,473
Services [Member]
Segment Reporting Information [Line Items]
Revenues	34,949	34,862
Voice Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	$ 27,396	$ 9,803

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration