Segment Reporting Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales to external customers	$ 65,370	$ 65,229
Depreciation and amortization	1,833	1,679
Operating income	5,702	8,433
Long-lived assets	40,132	41,731
Capital expenditures	662	998
Total assets	353,258	322,933	350,807
Americas Region
Segment Reporting Information [Line Items]
Net sales to external customers	26,109	25,059
Depreciation and amortization	1,092	1,046
Operating income	(1,008)	538
Long-lived assets	21,499	22,829
Capital expenditures	322	562
Total assets	187,404	171,145
Europe/Africa Region
Segment Reporting Information [Line Items]
Net sales to external customers	21,900	23,046
Depreciation and amortization	468	403
Operating income	1,949	2,304
Long-lived assets	16,233	16,851
Capital expenditures	243	182
Total assets	102,517	97,454
Asia Pacific Region
Segment Reporting Information [Line Items]
Net sales to external customers	17,361	17,124
Depreciation and amortization	273	230
Operating income	4,761	5,591
Long-lived assets	2,400	2,051
Capital expenditures	97	254
Total assets	$ 63,337	$ 54,334