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Fair Value Measurements - Recurring and Nonrecurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Fair value information related to assets |  |
Assets | $ 9,681 | $ 11,054
Liabilities | (1,118) | (1,210)
Earnout contingent consideration liability |  |
Fair value information related to assets |  |
Liabilities | (1,118) | (1,210)
Quoted Prices in Active Markets (Level 1) |  |
Fair value information related to assets |  |
Assets | 9,681 | 11,054
Liabilities | 0 | 0
Quoted Prices in Active Markets (Level 1) | Earnout contingent consideration liability |  |
Fair value information related to assets |  |
Liabilities | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Fair value information related to assets |  |
Assets | 0 | 0
Liabilities | 0 | 0
Significant Other Observable Inputs (Level 2) | Earnout contingent consideration liability |  |
Fair value information related to assets |  |
Liabilities | 0 | 0
Significant Unobserved Inputs (Level 3) |  |
Fair value information related to assets |  |
Assets | 0 | 0
Liabilities | (1,118) | (1,210)
Significant Unobserved Inputs (Level 3) | Earnout contingent consideration liability |  |
Fair value information related to assets |  |
Liabilities | (1,118) | (1,210)
Money market funds |  |
Fair value information related to assets |  |
Assets | 7,519 | 8,518
Money market funds | Quoted Prices in Active Markets (Level 1) |  |
Fair value information related to assets |  |
Assets | 7,519 | 8,518
Money market funds | Significant Other Observable Inputs (Level 2) |  |
Fair value information related to assets |  |
Assets | 0 | 0
Money market funds | Significant Unobserved Inputs (Level 3) |  |
Fair value information related to assets |  |
Assets | 0 | 0
Other mutual funds |  |
Fair value information related to assets |  |
Assets | 2,162 | 2,536
Other mutual funds | Quoted Prices in Active Markets (Level 1) |  |
Fair value information related to assets |  |
Assets | 2,162 | 2,536
Other mutual funds | Significant Other Observable Inputs (Level 2) |  |
Fair value information related to assets |  |
Assets | 0 | 0
Other mutual funds | Significant Unobserved Inputs (Level 3) |  |
Fair value information related to assets |  |
Assets | $ 0 | $ 0

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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=36462937&loc=d3e19207-110258 + Details
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