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Revenues (Tables)
 3 Months Ended
Mar. 31, 2021
Revenue Recognition [Abstract]  
Summary of Revenue Recognition for Revenue Categories
The following table summarizes revenue recognition for each revenue category:
Revenue Category
Timing of Revenue Recognition
Income Statement Classification
Connected devices, software licenses, and other
Point in time, as transfer of control occurs, generally upon installation and acceptance by the customer
Product
Technical services
Over time, as services are provided, typically ratably over the service term
Service
Consumables
Point in time, as transfer of control occurs, generally upon shipment to or receipt by customer
Product
SaaS, subscription software, and technology-enabled services
Over time, as services are provided
Service
Disaggregation of Revenues by Revenue Type
The following table summarizes the Company’s revenues disaggregated by revenue type for the three months ended March 31, 2021 and 2020:
Three Months Ended March 31,
20212020
(In thousands)
Connected devices, software licenses, and other$159,718 $147,347 
Technical services50,860 49,519 
Consumables18,407 22,726 
SaaS, subscription software, and technology-enabled services22,858 10,094 
Total revenues$251,843 $229,686 
Disaggregation of Revenues by Geographical Location
The following table summarizes the Company’s revenues disaggregated by geographic region, which is determined based on customer location, for the three months ended March 31, 2021 and 2020:
Three Months Ended March 31,
20212020
(In thousands)
United States$224,276 $207,734 
Rest of world (1)
27,567 21,952 
Total revenues$251,843 $229,686 
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(1)    No individual country represented more than 10% of total revenues.
Contract Asset and Liabilities
The following table reflects the Company’s contract assets and contract liabilities:
March 31,
2021		December 31,
2020
(In thousands)
Short-term unbilled receivables, net (1)
$12,184 $13,895 
Long-term unbilled receivables, net (2)
14,856 17,205 
Total contract assets$27,040 $31,100 
Short-term deferred revenues, net$119,588 $100,053 
Long-term deferred revenues7,887 5,673 
Total contract liabilities$127,475 $105,726 
_________________________________________________
(1)    Included in accounts receivable and unbilled receivables in the Condensed Consolidated Balance Sheets.
(2)    Included in other long-term assets in the Condensed Consolidated Balance Sheets.