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Revenues - Disaggregation of Revenues by Revenue Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 892,208	$ 897,027	$ 787,309
Connected devices, software licenses, and other
Disaggregation of Revenue [Line Items]
Revenues	560,368	573,844	483,414
Technical services
Disaggregation of Revenue [Line Items]
Revenues	202,383	194,183	183,202
Consumables
Disaggregation of Revenue [Line Items]
Revenues	75,663	85,758	86,182
SaaS, subscription software, and technology-enabled services
Disaggregation of Revenue [Line Items]
Revenues	$ 53,794	$ 43,242	$ 34,511

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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