Segment Reporting Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales to external customers	$ 68,190	$ 60,734	$ 201,889	$ 192,725
Depreciation and amortization	1,699	1,796	5,268	5,164
Operating (loss) income	7,597	5,023	18,785	20,327
Long-lived assets	41,431	41,081	41,431	41,081
Capital expenditures	1,218	947	2,953	3,648
Total assets	366,654	329,215	366,654	329,215	350,807
Americas Region
Segment Reporting Information [Line Items]
Net sales to external customers	29,817	24,849	84,306	75,622
Depreciation and amortization	959	1,083	3,035	3,189
Operating (loss) income	1,789	418	2,068	467
Long-lived assets	22,060	21,855	22,060	21,855
Capital expenditures	554	175	1,315	1,069
Total assets	193,157	170,414	193,157	170,414
Europe/Africa Region
Segment Reporting Information [Line Items]
Net sales to external customers	21,516	21,024	66,623	67,270
Depreciation and amortization	477	409	1,407	1,206
Operating (loss) income	1,184	1,492	2,973	5,409
Long-lived assets	16,852	16,514	16,852	16,514
Capital expenditures	398	526	930	1,288
Total assets	107,518	97,637	107,518	97,637
Asia Pacific Region
Segment Reporting Information [Line Items]
Net sales to external customers	16,857	14,861	50,960	49,833
Depreciation and amortization	263	304	826	769
Operating (loss) income	4,624	3,113	13,744	14,451
Long-lived assets	2,519	2,712	2,519	2,712
Capital expenditures	266	246	708	1,291
Total assets	$ 65,979	$ 61,164	$ 65,979	$ 61,164