Segment Reporting Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Net sales to external customers	$ 66,762	$ 59,711	$ 131,991	$ 112,277
Operating (loss) income	6,871	5,754	15,304	10,038
Long-lived assets	41,148	43,581	41,148	43,581
Capital expenditures	1,703	1,704	2,701	3,146
Total assets	325,395	289,632	325,395	289,632	312,791
Americas Region
Segment Reporting Information [Line Items]
Net sales to external customers	25,714	21,911	50,773	41,238
Operating (loss) income	(489)	137	49	604
Long-lived assets	22,379	22,723	22,379	22,723
Capital expenditures	332	849	894	1,734
Total assets	171,081	148,395	171,081	148,395
Europe/Africa Region
Segment Reporting Information [Line Items]
Net sales to external customers	23,200	23,932	46,246	42,954
Operating (loss) income	1,613	1,215	3,917	907
Long-lived assets	16,146	18,820	16,146	18,820
Capital expenditures	580	739	762	1,009
Total assets	94,777	93,660	94,777	93,660
Asia Pacific Region
Segment Reporting Information [Line Items]
Net sales to external customers	17,848	13,868	34,972	28,085
Operating (loss) income	5,747	4,402	11,338	8,527
Long-lived assets	2,623	2,038	2,623	2,038
Capital expenditures	791	116	1,045	403
Total assets	$ 59,537	$ 47,577	$ 59,537	$ 47,577