Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales to external customers	$ 72,507	$ 82,239	$ 226,221	$ 237,673
Depreciation and amortization	2,790	1,805	8,022	5,520
Operating (loss) income	(922)	8,993	6,358	24,362
Long-lived assets	76,507	50,182	76,507	50,182
Capital expenditures	2,389	5,751	8,462	10,306
Total assets	423,056	409,727	423,056	409,727	$ 425,463
Americas Region
Segment Reporting Information [Line Items]
Net sales to external customers	33,666	35,112	103,024	97,623
Depreciation and amortization	1,726	988	4,865	3,003
Operating (loss) income	628	1,966	(429)	3,340
Long-lived assets	48,672	31,228	48,672	31,228
Capital expenditures	1,377	4,651	5,412	7,778
Total assets	222,787	214,101	222,787	214,101
Europe/Africa Region
Segment Reporting Information [Line Items]
Net sales to external customers	22,460	26,046	71,170	78,813
Depreciation and amortization	756	490	2,161	1,528
Operating (loss) income	(5,065)	864	(5,432)	5,029
Long-lived assets	25,232	16,482	25,232	16,482
Capital expenditures	817	834	2,489	1,947
Total assets	126,338	117,824	126,338	117,824
Asia-Pacific Region
Segment Reporting Information [Line Items]
Net sales to external customers	16,381	21,081	52,027	61,237
Depreciation and amortization	308	327	996	989
Operating (loss) income	3,515	6,163	12,219	15,993
Long-lived assets	2,603	2,472	2,603	2,472
Capital expenditures	195	266	561	581
Total assets	$ 73,931	$ 77,802	$ 73,931	$ 77,802