Schedule Of Revenues By Product Lines (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Segment Reporting Information [Line Items]
Revenues	$ 192,821	$ 211,805	$ 573,450	$ 611,406
Systems And Solutions
Segment Reporting Information [Line Items]
Revenues	92,641	102,139	271,371	301,183
Printer And Media
Segment Reporting Information [Line Items]
Revenues	37,392	43,679	111,612	131,818
Services
Segment Reporting Information [Line Items]
Revenues	33,638	35,203	103,335	107,365
Voice Solutions
Segment Reporting Information [Line Items]
Revenues	$ 29,150	$ 30,784	$ 87,132	$ 71,040