Summary of Significant Accounting Policies Concentrations (Details)
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12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Licensee 1 [Member] | Revenue, Rights Granted [Member] |
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| Concentration Risk [Line Items] |
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|
|
| Concentration risk, percentage |
26.00%
|
24.00%
|
22.00%
|
| Licensee 1 [Member] | Accounts Receivable [Member] |
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| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
39.00%
|
72.00%
|
|
| Licensee 2 [Member] | Revenue, Rights Granted [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
23.00%
|
20.00%
|
22.00%
|
| Licensee 2 [Member] | Accounts Receivable [Member] |
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|
|
| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
22.00%
|
21.00%
|
|
| Licensee 3 [Member] | Revenue, Rights Granted [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
11.00%
|
16.00%
|
|
| Licensee 3 [Member] | Accounts Receivable [Member] |
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|
|
| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
16.00%
|
|
|
| Licensee 4 [Member] | Accounts Receivable [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
15.00%
|
|
|
| Licensees in foreign jurisdictions [Member] | Revenue, Rights Granted [Member] |
|
|
|
| Concentration Risk [Line Items] |
|
|
|
| Concentration risk, percentage |
79.00%
|
49.00%
|
43.00%
|