Information about Operations by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 01, 2012	Apr. 01, 2012	Jul. 03, 2011	Apr. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Segment Reporting Information [Line Items]
Total revenue	$ 155,067	$ 157,649	$ 164,285	$ 164,889	$ 312,716	$ 329,174
Segment operating income (loss)	6,387	3,240	4,452	6,870	9,627	11,322
Healthcare
Segment Reporting Information [Line Items]
Total revenue	54,763	57,050	59,051	60,672	111,813	119,723
Segment operating income (loss)	3,774	2,568	3,824	4,683	6,342	8,507
Business Solutions
Segment Reporting Information [Line Items]
Total revenue	100,304	100,599	105,234	104,217	200,903	209,451
Segment operating income (loss)	$ 2,613	$ 672	$ 628	$ 2,187	$ 3,285	$ 2,815