Fair Value Measurement (Details 2) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value	$ (497)
Risk-free interest rate	1.00%
Expected contractual life	5 years
Level 3 [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value	$ 497
Level 3 [Member] \| Derivative options based on equity shares [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value	$ (367)
Methodology	Cash or Nothing- option model
Expected volatility	33.40%
Risk-free interest rate	0.01%
Expected contractual life	2 months 19 days
Level 3 [Member] \| Derivative options based on commodities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value	$ (25)
Methodology	Cash or Nothing- option model
Expected volatility	21.80%
Risk-free interest rate	0.01%
Expected contractual life	1 month 6 days
Level 3 [Member] \| Derivative options based on exchange differences [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value	$ (105)
Methodology	Cash or Nothing- option model
Expected volatility	32.50%
Risk-free interest rate	0.01%
Expected contractual life	2 months 19 days

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

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- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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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.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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