Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Data Type:	num:percentItemType
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The effective interest rate at the end of the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Name Accounting Standards Codification
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+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
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- Details

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- Details

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- Details

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Financial Liabilities - Loans and RCF Agreements (Details)	12 Months Ended
	Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 EUR (€)	Sep. 30, 2015 USD ($)	May 31, 2015 CNY (¥)	May 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Oct. 31, 2014 CNY (¥)	Feb. 28, 2014 EUR (€)	Feb. 28, 2014 USD ($)
Debt Instrument [Line Items]
Amount drawn \| $			$ 82,921,000		$ 9,245,000					$ 13,051,000
Loans Payable \| 2.09% Bpifrance Financement (Fench Public Investment Bank) Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount		€ 3,000,000										€ 3,000,000	$ 3,200,000.0
Interest rate, stated percentage	2.09%	2.09%	2.09%
Line of Credit \| Revolving Credit Facility \| Bpifrance Financement (French Public Investment Bank) RCF
Debt Instrument [Line Items]
Maximum borrowing capacity \| €		€ 2,000,000
Amount drawn		50,000	$ 100,000
Line of Credit \| Revolving Credit Facility \| Bank Syndicate RCF
Debt Instrument [Line Items]
Maximum borrowing capacity		250,000,000.0	263,500,000.0			€ 250,000,000	$ 263,500,000.0
Amount drawn		€ 75,000,000	75,000,000
Line of Credit \| Revolving Credit Facility \| HSBC Revolving Loan Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	¥ 40,000,000.0		5,800,000.0					¥ 40,000,000.0	$ 5,800,000.0		¥ 15,000,000
Amount drawn	¥ 30,000,000		$ 4,300,000	¥ 25,000,000	$ 3,900,000
Line of Credit \| Euribor 3 Months \| Revolving Credit Facility \| Bpifrance Financement (French Public Investment Bank) RCF
Debt Instrument [Line Items]
Basis spread on variable rate	0.70%
Interest rate at period end	0.39%	0.39%	0.39%
Line of Credit \| EURIBOR / LIBOR \| Revolving Credit Facility \| Bank Syndicate RCF
Debt Instrument [Line Items]
Interest rate at period end	1.73%	1.73%	1.73%
Line of Credit \| People’s Bank of China Rate Effective on Loan Drawdown Date \| Revolving Credit Facility \| HSBC Revolving Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate	10.00%
Interest rate at period end	4.79%	4.79%	4.79%