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Commitments and Contingencies - Narrative (Details) $ in Thousands, € in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 11, 2019 EUR (€) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Other Commitments [Line Items] |  |  |  |
Royalty expense |  | $ 6,700 | $ 5,300 | $ 4,400
Selio |  |  |  |
Other Commitments [Line Items] |  |  |  |
Loan from acquisition |  | $ 250 |  |
Interest rate on loan | 5.00% |  |  |
Maximum | Selio |  |  |  |
Other Commitments [Line Items] |  |  |  |
Loan commitment from acquisition | € | € 2 |  |  |

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- Definition Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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