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Fair Value Measurements (Details 1) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Assets: |  |
Assets | $ 11,876 | $ 4,488
Liabilities: |  |
Total liabilities |  | 10,049
Rochester Royalty Obligation [Member] |  |
Liabilities: |  |
Derivative fair value of derivative liability |  | 9,287
Other Derivative Instrument [Member] |  |
Assets: |  |
Fair value of derivative asset | 4 |
Liabilities: |  |
Derivative fair value of derivative liability | 169 | 762
Equity Securities [Member] |  |
Assets: |  |
Equity securities | 11,872 | 4,488
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Assets | 11,614 | 4,209
Liabilities: |  |
Total liabilities |  | 0
Fair Value, Inputs, Level 1 [Member] | Rochester Royalty Obligation [Member] |  |
Liabilities: |  |
Derivative fair value of derivative liability |  | 0
Fair Value, Inputs, Level 1 [Member] | Other Derivative Instrument [Member] |  |
Assets: |  |
Fair value of derivative asset | 0 |
Liabilities: |  |
Derivative fair value of derivative liability | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] |  |
Assets: |  |
Equity securities | 11,614 | 4,209
Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Assets | 4 | 0
Liabilities: |  |
Total liabilities |  | 762
Fair Value, Inputs, Level 2 [Member] | Rochester Royalty Obligation [Member] |  |
Liabilities: |  |
Derivative fair value of derivative liability |  | 0
Fair Value, Inputs, Level 2 [Member] | Other Derivative Instrument [Member] |  |
Assets: |  |
Fair value of derivative asset | 4 |
Liabilities: |  |
Derivative fair value of derivative liability | 169 | 762
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] |  |
Assets: |  |
Equity securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Assets | 258 | 279
Liabilities: |  |
Total liabilities |  | 9,287
Fair Value, Inputs, Level 3 [Member] | Rochester Royalty Obligation [Member] |  |
Liabilities: |  |
Derivative fair value of derivative liability |  | 9,287
Fair Value, Inputs, Level 3 [Member] | Other Derivative Instrument [Member] |  |
Assets: |  |
Fair value of derivative asset | 0 |
Liabilities: |  |
Derivative fair value of derivative liability | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] |  |
Assets: |  |
Equity securities | $ 258 | $ 279

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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