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Operating expenses (Schedule of Acquisition Related Costs) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Acquisition-related costs | $ 6,014 | $ 777 | $ 5,093
Rouse Services LLC [Member] |  |  |
Acquisition-related costs | 6,014 |  |
Rouse Services LLC [Member] | Employment Costs [Member] |  |  |
Acquisition-related costs | 802 |  |
Rouse Services LLC [Member] | Other Related Costs [Member] |  |  |
Acquisition-related costs | $ 5,212 |  |
Iron Planet Holdings Inc. [Member] | Other Related Costs [Member] |  |  |
Acquisition-related costs |  | 82 | 2,944
Other Acquisitions [Member] |  |  |
Acquisition-related costs |  | 777 | 5,093
Other Acquisitions [Member] | Employment Costs [Member] |  |  |
Acquisition-related costs |  | 128 | 2,091
Other Acquisitions [Member] | Other Related Costs [Member] |  |  |
Acquisition-related costs |  | $ 567 | $ 58

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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- Details
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- Details
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