Segment Reporting (Schedule Of Revenues By Product Lines) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
Oct. 02, 2011	Sep. 26, 2010	Oct. 02, 2011	Sep. 26, 2010
Revenues	$ 211,805	$ 168,713	$ 611,406	$ 479,104
Systems And Solutions [Member]
Revenues	102,139	93,687	301,183	260,216
Printer And Media [Member]
Revenues	43,679	41,426	131,818	120,455
Service By Product Lines [Member]
Revenues	35,203	33,600	107,365	98,433
Voice Solutions [Member]
Revenues	$ 30,784		$ 71,040

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