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Data Type:	xbrli:stringItemType
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Agreed upon price for the exchange of the underlying asset.

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

Name:	us-gaap_FairValueAssumptionsExercisePrice
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Data Type:	num:perShareItemType
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Period Type:	instant

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

Name:	us-gaap_FairValueAssumptionsExpectedDividendRate
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Data Type:	num:percentItemType
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Period Type:	duration

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.

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

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Data Type:	num:percentItemType
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Period Type:	duration

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