Segment Reporting Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Net sales to external customers	$ 89,895	$ 68,190	$ 68,329	$ 65,370	$ 80,670	$ 60,734	$ 66,762	$ 65,229	$ 291,784	$ 273,395	$ 254,164
Depreciation and amortization									7,038	6,976	6,712
Operating (loss) income									30,154	31,554	32,858
Long-lived assets	43,921				41,208				43,921	41,208	41,692
Capital expenditures									6,440	4,672	5,988
Total assets	391,496				350,807				391,496	350,807	312,791
Americas Region
Segment Reporting Information [Line Items]
Net sales to external customers									120,435	108,616	97,484
Depreciation and amortization									4,012	4,294	4,008
Operating (loss) income									6,270	2,949	8,864
Long-lived assets	23,791				21,775				23,791	21,775	23,024
Capital expenditures									3,563	1,435	3,371
Total assets	201,679				179,594				201,679	179,594	167,579
Europe/Africa Region
Segment Reporting Information [Line Items]
Net sales to external customers									103,415	100,111	99,568
Depreciation and amortization									1,880	1,658	1,807
Operating (loss) income									6,417	10,703	6,909
Long-lived assets	17,409				16,871				17,409	16,871	16,592
Capital expenditures									1,558	1,672	1,748
Total assets	122,197				110,152				122,197	110,152	92,231
Asia Pacific Region
Segment Reporting Information [Line Items]
Net sales to external customers									67,934	64,668	57,112
Depreciation and amortization									1,146	1,024	897
Operating (loss) income									17,467	17,902	17,085
Long-lived assets	2,721				2,562				2,721	2,562	2,076
Capital expenditures									1,319	1,565	869
Total assets	$ 67,620				$ 61,061				$ 67,620	$ 61,061	$ 52,981