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Summary of Significant Accounting Policies Concentrations (Details) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Licensee 1 [Member] | Revenue, Rights Granted [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 21.00% | 26.00% | 35.00%
Licensee 1 [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 34.00% | 18.00% |
Licensee 2 [Member] | Revenue, Rights Granted [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 14.00% | 17.00% | 19.00%
Licensee 2 [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 30.00% | 15.00% |
Licensee 3 [Member] | Revenue, Rights Granted [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 10.00% | 15.00% |
Licensee 3 [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 25.00% | 14.00% |
Licensee 4 [Member] | Revenue, Rights Granted [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 10.00% |  |
Licensee 4 [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage |  | 13.00% |
Licensee 5 [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage |  | 10.00% |
Licensees in foreign jurisdictions [Member] | Revenue, Rights Granted [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 43.00% | 49.00% | 6.00%

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611 + Details
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