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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Rental Payments for Operating Leases | Minimum annual rental commitments for operating leases of continuing operations having initial or remaining noncancellable lease terms in excess of one year are as follows (in thousands):
Years ending December 31, |
2018 | $ | 1,213 |
2019 | 1,369 |
2020 | 16 |
Total minimum lease payments | $ | 2,598 |
Net assets of IP Fund [Table Text Block] | At December 31, 2017 and 2016, the Acacia IP Fund net assets and net income (loss) were primarily comprised of the following (in thousands):
|  | 2017 |  | 2016
Cash and other assets |  | $ | 986 |  |  | $ | 1,118 |
Investments - noncurrent |  | 1,905 |  |  | 2,933 |
Total assets |  | $ | 2,891 |  |  | $ | 4,051 |
Accrued expenses and contributions |  | $ | 2,567 |  |  | $ | 2,394 |
Net assets |  | $ | 324 |  |  | $ | 1,657 |
|  | 2017 |  | 2016
Revenues |  | $ | — |  |  | $ | 16 |
Operating expenses |  | 390 |  |  | 572 |
Loss from operations |  | (390 | ) |  | (556 | )
Net loss in equity method investments |  | (943 | ) |  | (1,013 | )
Net loss |  | $ | (1,333 | ) |  | $ | (1,569 | )

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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