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Investments (Narrative) (Details) BRL in Thousands, $ in Thousands	3 Months Ended												12 Months Ended			36 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	[1]	Sep. 30, 2014 USD ($)	[1]	Jun. 30, 2014 USD ($)	[1]	Mar. 31, 2014 USD ($)	[1]	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 BRL	Dec. 31, 2015 USD ($)	Dec. 31, 2014 BRL	Dec. 31, 2014 USD ($)	Dec. 31, 2010
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments													$ 608	$ 815	$ 476
Noncontrolling interest																	$ 13,310		$ 22,550
Noncontrolling interest, (decrease) from distributions to noncontrolling interest holders															(212)
Less: income (loss) attributable to noncontrolling interest	$ (1,133)	$ (69)	$ (596)	$ (409)	$ (6,444)		$ 1,160		$ (7,221)		$ (978)		(2,207)	(13,483)	1,377
PST Eletronicaltda [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage																				50.00%
Percentage ownership in consolidated subsidiary																74.00%
Noncontrolling interest																	13,310		22,550
Noncontroling interest increase (decrease)													(9,240)	(16,990)	(4,541)
Foreign currency translation adjustments													(7,033)	(3,507)	(5,706)
Noncontrolling interest, (decrease) from distributions to noncontrolling interest holders															212
Less: income (loss) attributable to noncontrolling interest													(2,207)	(13,483)	1,377
Comprehensive income (loss) related to noncontrolling interest													(9,240)	(16,990)	$ (4,329)
Dividends payable to noncontrolling interest																BRL 10,842	$ 2,777	BRL 10,842	$ 4,082
Minda Stoneridge Instruments Ltd [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage															49.00%	49.00%	49.00%	49.00%	49.00%
Equity method investments																	$ 6,929		$ 6,653
Income (loss) from equity method investments													$ 608	$ 815	$ 476
[1] Goodwill impairment charge (benefit) of $29,300, $(5,802), and $27,960 related to the PST segment was recorded for the quarters ended June 30, 2014, September 30, 2014 and December 31, 2014, respectively, of which $6,436, $(1,274) and $6,142, respectively, was attributable to noncontrolling interest.

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