v3.19.1

Fair value measurement (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Assets: |  |
Marketable securities | $ 4,495 | $ 0
Recurring basis |  |
Assets: |  |
Money market accounts | 59,910 | 137,723
Marketable securities | 41,383 |
Total assets | 101,293 | 137,723
Liabilities: |  |
Contingent consideration | 961 | 961
Total liabilities | 961 | 961
Recurring basis | Level 1 |  |
Assets: |  |
Money market accounts | 59,910 | 137,723
Marketable securities | 4,463 |
Total assets | 64,373 | 137,723
Recurring basis | Level 2 |  |
Assets: |  |
Marketable securities | 36,920 |
Total assets | 36,920 |
Recurring basis | Level 3 |  |
Liabilities: |  |
Contingent consideration | 961 | 961
Total liabilities | $ 961 | $ 961

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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