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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2012
Commitments and Contingencies [Abstract] |
Net assets of IP Fund [Table Text Block] | At December 31, 2012 and 2011, the Acacia IP Fund net assets were primarily comprised of the following (in thousands):
|  | December 31, 2012 |  | December 31, 2011
Cash and other assets |  | $ | 2,542 |  |  | $ | 1,109 |
Patents, net of accumulated amortization |  | 7,144 |  |  | 4,277 |
Investments - noncurrent |  | 11,617 |  |  | 3,944 |
Total assets |  | $ | 21,303 |  |  | $ | 9,330 |
Accrued expenses and contributions |  | $ | 5,016 |  |  | $ | 4,495 |
Accrued patent acquisition costs |  | 500 |  |  | 500 |
Total liabilities |  | 5,516 |  |  | 4,995 |
Net assets |  | $ | 15,787 |  |  | $ | 4,335 |
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):
Year |
2013 | $ | 1,078 |
2014 | 1,130 |
2015 | 1,138 |
2016 | 735 |
2017 | 320 |
Thereafter | 822 |
Total minimum lease payments | $ | 5,223 |

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- Definition Net assets of IP Fund [Table Text Block] + References No definition available. + Details
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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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