Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

Geographic Information (in thousands):
	Years Ended December 31,
	2013				2012				2011
	Total Net Revenues		Long-Lived Assets (1)		Total Net Revenues		Long-Lived Assets(1)		Total Net Revenues		Long-Lived Assets (1)
United States of America	$	62,667	$	48,432	$	66,267	$	51,715	$	71,700	$	53,368
Other North American Countries	144		—		193		—		842		—
Korea	28,050		16		36,896		24		40,155		39
Taiwan	23,503		2,956		22,507		3,492		23,938		2,153
Singapore	26,353		9		23,899		8		21,883		5
China	15,873		2,424		16,183		1,417		19,079		1,333
Hong Kong	33,881		86		37,300		215		26,429		163
Japan	14,686		23		14,329		1		17,392		5
Other Asian Countries	1,259		3,727		1,284		3,717		1,629		3,716
Europe	30,664		106		31,254		103		35,978		102
Total	$	237,080	$	57,779	$	250,112	$	60,692	$	259,025	$	60,884

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(1) Long-lived assets consist of property, plant and equipment.