Business Segment and Foreign Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	$ 142,389	$ 124,871	$ 393,220	$ 345,307
United States [Member]
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	53,310	49,015	146,057	123,364
Asia (excluding PRC) [Member]
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	28,521	27,752	80,256	89,271
People's Republic of China [Member]
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	27,913	21,031	69,537	55,740
Europe [Member]
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	16,686	14,049	50,207	42,183
Latin America [Member]
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	9,617	7,926	26,327	20,067
All Other Countries [Member]
Schedule of Revenues from Geographical Segments [Line Items]
Total net sales	$ 6,342	$ 5,098	$ 20,836	$ 14,682