Fair Value Measurement (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value Measurement
Derivative assets	$ 1,582	$ 1,120
Derivative liabilities	(530)	(646)
Total Fair Value \| U.S. credit facility
Fair Value Measurement
Debt instrument	(38,000)	(44,250)
Total Fair Value \| Japanese working capital loan
Fair Value Measurement
Debt instrument		(18,611)
Total Fair Value \| Japanese term loan
Fair Value Measurement
Debt instrument	(10,178)
Total Fair Value \| Japanese term loan
Fair Value Measurement
Debt instrument		(954)
Total Fair Value \| China credit facility
Fair Value Measurement
Debt instrument	(270)
Total Fair Value \| Other loans
Fair Value Measurement
Debt instrument	(162)	(158)
Level 2 \| U.S. credit facility
Fair Value Measurement
Debt instrument	(38,000)	(44,250)
Level 2 \| Japanese working capital loan
Fair Value Measurement
Debt instrument		(18,611)
Level 2 \| Japanese term loan
Fair Value Measurement
Debt instrument	(10,178)
Level 2 \| Japanese term loan
Fair Value Measurement
Debt instrument		(954)
Level 2 \| China credit facility
Fair Value Measurement
Debt instrument	(270)
Level 2 \| Other loans
Fair Value Measurement
Debt instrument	(162)	(158)
Recurring \| Total Fair Value
Fair Value Measurement
Derivative assets	1,582	1,120
Derivative liabilities	(530)	(646)
Acquisition earn-out liability	(1,328)	(1,300)
Recurring \| Level 2
Fair Value Measurement
Derivative assets	1,582	1,120
Derivative liabilities	(530)	(646)
Acquisition earn-out liability	(1,328)	(1,300)
Carrying Value
Fair Value Measurement
Derivative assets	1,582	1,120
Derivative liabilities	(530)	(646)
Acquisition earn-out liability	(1,328)	(1,300)
Carrying Value \| U.S. credit facility
Fair Value Measurement
Debt instrument	(38,000)	(44,250)
Carrying Value \| Japanese working capital loan
Fair Value Measurement
Debt instrument		(18,611)
Carrying Value \| Japanese term loan
Fair Value Measurement
Debt instrument	(10,178)
Carrying Value \| Japanese term loan
Fair Value Measurement
Debt instrument		(954)
Carrying Value \| China credit facility
Fair Value Measurement
Debt instrument	(270)
Carrying Value \| Other loans
Fair Value Measurement
Debt instrument	$ (162)	$ (158)

Amount of liability recognized arising from contingent consideration in a business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 35

-Paragraph 1

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226000-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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- Definition

Fair value before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration