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Common Stock (Details Textual) (USD $)	Mar. 31, 2015
Class of Stock [Line Items]
Registration Payment Arrangement, Maximum Potential Consideration	$ 500,000,000us-gaap_RegistrationPaymentArrangementMaximumPotentialConsideration

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- Definition

Describes the maximum potential amount of consideration, undiscounted, that could be transferred under the registration payment arrangement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

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