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Recent Accounting Pronouncements Details (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Jan. 01, 2018 | Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Accounts Receivable, Net, Current | $ 4,754 |  | $ 4,695 | $ 153
Royalties and contingent legal fees payable | 39,937 |  | 3,329 | 1,601
Retained Earnings (Accumulated Deficit) | (349,550) |  | (317,512) | (320,018)
Stockholders' Equity Attributable to Noncontrolling Interest | 1,593 |  | 1,666 | $ 1,358
Licenses Revenue | 62,093 | $ 8,854 |  |
Royalty Expense | 21,744 | 666 |  |
Contingent legal fees | 15,759 | $ 627 |  |
Adjustments for New Accounting Pronouncement [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Accounts Receivable, Net, Current | 2,030 |  | 4,542 |
Royalties and contingent legal fees payable | 812 |  | 1,728 |
Retained Earnings (Accumulated Deficit) |  |  | 2,506 |
Stockholders' Equity Attributable to Noncontrolling Interest |  |  | $ 308 |
Licenses Revenue | 2,030 |  |  |
Royalty Expense | 698 |  |  |
Contingent legal fees | 114 |  |  |
Balance before adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Accounts Receivable, Net, Current | 2,724 |  |  |
Royalties and contingent legal fees payable | 39,125 |  |  |
Licenses Revenue | 60,063 |  |  |
Royalty Expense | 21,046 |  |  |
Contingent legal fees | $ 15,645 |  |  |

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