Information about Operations by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012	Apr. 01, 2012	Oct. 02, 2011	Apr. 03, 2011	Sep. 30, 2012	Oct. 02, 2011
Segment Reporting Information [Line Items]
Total revenue	$ 145,722	$ 157,649	$ 157,543	$ 164,889	$ 458,438	$ 486,717
Segment operating income (loss)	4,587	3,240	5,851	6,870	14,214	17,173
Healthcare
Segment Reporting Information [Line Items]
Total revenue	51,535	57,050	57,717	60,672	163,348	177,440
Segment operating income (loss)	2,222	2,568	3,858	4,683	8,564	12,365
Business Solutions
Segment Reporting Information [Line Items]
Total revenue	94,187	100,599	99,826	104,217	295,090	309,277
Segment operating income (loss)	$ 2,365	$ 672	$ 1,993	$ 2,187	$ 5,650	$ 4,808