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v2.4.1.9

Related Party Arrangements (Details) (Chief Executive Officer, Research Grants, USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Chief Executive Officer | Research Grants |  |
Related Party Transaction [Line Items] |  |
Total expense | $ 350,000 us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ChiefExecutiveOfficerMember | $ 297,000 us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ChiefExecutiveOfficerMember

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration