Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Oct. 03, 2015
Goodwill [Roll Forward]
Balance at beginning of period	$ 144,359	$ 43,132
Goodwill impairment loss	(5,380)
Exchange rate effects	(735)	(1,950)
Balance at end of period	138,244	144,359	$ 43,132
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Trade Names	20,359	20,359
Intangible Assets Subject to Amortization	270,179	357,307
Accumulated amortization	(187,280)	(191,053)
Net Intangible Assets Subject to Amortization	82,899	166,254
Intangible assets, net	103,258	186,613
Amortization expense (excluding capitalized software)	21,829	18,651	15,068
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
2016	15,267
2017	13,113
2018	9,139
2019	5,322
2020	4,932
Capella Microsystems (Taiwan) Inc. [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		96,849
Impairment of Long-Lived Assets Held-for-use	57,600
Holy Stone Polytech [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		6,328
Other intangible assets related to acquisitions		3,736
Resistors And Inductors Segment [Member]
Goodwill [Roll Forward]
Balance at beginning of period	42,146	43,132
Goodwill impairment loss	0
Exchange rate effects	(751)	(986)
Balance at end of period	41,395	42,146	43,132
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				200.00%
Resistors And Inductors Segment [Member] | Capella Microsystems (Taiwan) Inc. [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		0
Resistors And Inductors Segment [Member] | Holy Stone Polytech [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		0
Capacitors Segment [Member]
Goodwill [Roll Forward]
Balance at beginning of period	5,364	0
Goodwill impairment loss	(5,380)
Exchange rate effects	16	(964)
Balance at end of period	0	5,364	0
Capacitors Segment [Member] | Capella Microsystems (Taiwan) Inc. [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		0
Capacitors Segment [Member] | Holy Stone Polytech [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		6,328
Optoelectronic Components Segment [Member]
Goodwill [Roll Forward]
Balance at beginning of period	96,849	0
Goodwill impairment loss	0
Exchange rate effects	0	0
Balance at end of period	96,849	96,849	$ 0
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				130.00%
Optoelectronic Components Segment [Member] | Capella Microsystems (Taiwan) Inc. [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		96,849
Optoelectronic Components Segment [Member] | Holy Stone Polytech [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		0
Patents and Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Subject to Amortization	93,606	108,190
Accumulated amortization	(76,258)	(71,700)
Capitalized Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Subject to Amortization	53,401	53,369
Accumulated amortization	(47,394)	(45,979)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Subject to Amortization	85,418	153,853
Accumulated amortization	(37,989)	(50,630)
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Subject to Amortization	35,493	39,612
Accumulated amortization	(23,798)	(21,384)
Non-competition Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Subject to Amortization	2,261	2,283
Accumulated amortization	$ (1,841)	$ (1,360)