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Commitments and Contingencies (Details Textual) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Commitments and Contingencies (Textual) [Abstract] |  |  |
Operating leases expenses | $ 1,338,000 | $ 1,046,000 | $ 1,015,000
Stand by letter of credit amount |  | 700,000 |
Stand by letter of credit decreased | 419,000 |  |
Patent filling period of research affiliates maximum | 8 years |  |
Patent filling period of research affiliates minimum | 3 years |  |
Settlement payment from research affiliates | 700,000 |  |
Litigation, net | 176,000 | 150,000 |
Reimburse Amount | 2,500,000 |  |
Loss contingency net amount reimburse by insurance carrier | 200,000 |  |
Litigation expenses |  | $ 200,000 |
Period in which office lease expires | Jan. 01, 2014 |  |

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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition This element represents the expenses incurred by the entity which are directly related and attributable to receiving an award in settlement of litigation. + References No definition available. + Details
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- Details
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- Definition Letters of credit decreased amount. + References No definition available. + Details
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- Definition Loss contingency gross amount reimburse by insurance carrier. + References No definition available. + Details
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- Definition Loss contingency net amount reimburse by insurance carrier. + References No definition available. + Details
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- Definition Loss contingency period for not filling lawsuit if acquired. + References No definition available. + Details
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- Definition Operating leases expenses. + References No definition available. + Details
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- Definition Settlement payment from research affiliates. + References No definition available. + Details
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