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Revenue
 12 Months Ended
Dec. 31, 2022
Revenue from Contract with Customer [Abstract]  
Revenue Revenue
Disaggregation of Revenues
The following tables present the Company's revenues disaggregated by major products and services, geographical region and timing of revenue recognition.
Revenue by major products and services
Years Ended December 31,
202220212020
(In thousands)
Subscription (1)$89,153 $68,507 $52,389 
Maintenance and support48,345 51,276 49,228 
Professional services and other (2)8,008 15,197 32,225 
Hardware products73,500 79,501 81,849 
Total Revenue$219,006 $214,481 $215,691 

1.Subscription includes cloud and on-premises subscription revenue, previously referred to as “subscription” and “term-based software licenses”, respectively.

2.Professional services and other includes perpetual software licenses revenue, which was approximately 2%, 5%, and 12% of total revenue for the years ended December 31, 2022, 2021, and 2020, respectively.
Revenue by location of customer for the years ended December 31, 2022, 2021, and 2020
(In thousands, except percentages)EMEA Americas APAC Total
Total Revenue:
2022$100,298 $77,740 $40,968 $219,006 
2021$104,878 $68,646 $40,957 $214,481 
2020$117,086 $53,171 $45,434 $215,691 
Percent of Total:
202246 %35 %19 %100 %
202149 %32 %19 %100 %
202054 %25 %21 %100 %
Timing of revenue recognition
Years Ended December 31,
(In thousands)202220212020
Products and Licenses transferred at a point in time$121,426 $120,358 $132,986 
Services transferred over time97,580 94,123 82,705 
Total Revenue$219,006 $214,481 $215,691 
Contract balances
The following table provides information about receivables, contract assets and contract liabilities from contracts with customers as of December 31, 2022 and 2021:
(In thousands)December 31,
20222021
Receivables, inclusive of trade and unbilled$65,132 $56,612 
Contract Assets (current and non-current)$4,642 $4,889 
Contract Liabilities (Deferred Revenue current and non-current)$70,907 $63,742 
Contract assets relate primarily to multi-year term license arrangements and the remaining contractual billings. These contract assets are transferred to receivables when the right to billing occurs, which is normally over 3-5 years. The contract liabilities primarily relate to the advance consideration received from customers for subscription and maintenance services. Revenue is recognized for these services over time.
As a practical expedient, the Company does not adjust the promised amount of consideration for the effects of a significant financing component when it is expected, at contract inception, that the period between the Company's transfer of a promised product or service to a customer and when the customer pays for that product or service will be one year or less. Extended payment terms are not typically included in contracts with customers.
Revenue recognized during the year ended December 31, 2022 included $52.8 million that was included on the December 31, 2021 consolidated balance sheet in contract liabilities. Deferred revenue increased in the same period due to timing of annual renewals.
Transaction price allocated to the remaining performance obligations

    Remaining performance obligations represent the revenue that is expected to be recognized in future periods related to performance obligations that are unsatisfied, or partially unsatisfied, as of the end of the period. The following
table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of December 31, 2022:
(In thousands)202320242025Beyond 2025Total
Future revenue related to current unsatisfied performance obligations$44,407 $19,574 $7,872 $5,336 $77,189 
The Company applies practical expedients and does not disclose information about remaining performance obligations (a) that have original expected durations of one year or less, or (b) where revenue is recognized as invoiced.
Costs of obtaining a contract
The Company incurs incremental costs related to commissions, which can be directly tied to obtaining a contract. The Company capitalizes commissions associated with certain new contracts and amortizes the costs over a period of up to seven years, which is the determined benefit period based on the transfer of goods or services. The Company determined the period of benefit by taking into consideration the customer contracts, its technology and other factors, including customer attrition. Commissions are earned upon invoicing to the customer. For contracts with multiple year payment terms, because the commissions that are payable after year 1 are payable based on continued employment, they are expensed when incurred. Commissions and amortization expense are included in “Sales and marketing” expense in the consolidated statements of operations.
Applying the practical expedient, the Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period for the assets that the Company otherwise would have recognized is one year or less. These costs are included in the “Sales and marketing” caption in the consolidated statements of operations.
The following tables provide information related to the capitalized costs and amortization recognized in the current and prior period:
December 31,
(In thousands)20222021
Capitalized costs to obtain contracts, current$2,929 $2,134 
Capitalized costs to obtain contracts, non-current$10,571 $8,675 
(In thousands)Years Ended December 31,
20222021
Amortization of capitalized costs to obtain contracts$2,404 $1,555 
Impairments of capitalized costs to obtain contracts$— $—