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Organization and Summary of Significant Accounting Policies (Details Textual) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended
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Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Nov. 12, 2013 Collaborative Arrangement Co-promotion [Member] | Dec. 31, 2012 Collaborative Arrangement Co-promotion [Member]
Schedule of Organization and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Non-refundable up-front payment |  |  |  |  |  |  |  |  |  |  | $ 15,750,000
License and services revenue |  |  |  |  |  |  |  |  |  |  | 15,000,000
Milestone payment |  |  |  |  |  |  |  |  |  |  | 15,000,000
Additional amount received upon achievement of sales milestones |  |  |  |  |  |  |  |  |  | 165,000,000 | 165,000,000
Additional amount in regulatory milestones |  |  |  |  |  |  |  |  |  | 35,000,000 | 35,000,000
Cash | 8,853,000 | 8,853,000 | 11,176,000 | 8,853,000 | 11,176,000 | 11,798,000 | 18,102,000 | 5,406,000 | 3,180,000 |  |
Non-cash stock-based compensation expense |  |  |  | 386,000 | 635,000 | 678,000 | 2,581,000 | 1,177,000 |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total |  | 800,000 | 5,100,000 | 2,600,000 | 11,100,000 | 9,700,000 | 15,200,000 | 15,200,000 |  |  |
Non-Cash Gain (Loss) on Changes in Fair Value of Warrants | $ (284,000) |  | $ 5,362,000 | $ (1,148,000) | $ 2,317,000 | $ 1,737,000 | $ (1,766,000) | $ 1,862,000 |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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- Definition Revenue from multiple-deliverable arrangements that include licensing fees and services revenue. Licensing revenue is consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity. Services revenue may be derived by providing other, nonspecified, services during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d),(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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