Revenue | Note 2 - Revenue Disaggregation of Revenue The following tables present disaggregated revenue by products and services lines and by geographical regions for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Revenue by Products and Services 2021 2020 2021 2020 Contract Operations Segment: Contract operations services (1) $ 83,362 $ 81,679 $ 251,874 $ 254,412 Aftermarket Services Segment: Operation and maintenance services (1) $ 11,655 $ 12,966 $ 36,171 $ 38,184 Part sales (2) 10,680 11,490 33,000 31,999 Other services (1) 2,298 5,979 9,983 13,154 Total aftermarket services $ 24,633 $ 30,435 $ 79,154 $ 83,337 Product Sales Segment: Compression equipment (1) (3) $ 5,795 $ 40,300 $ 13,767 $ 73,654 Processing and treating equipment (1) 41,825 14,220 85,715 34,836 Other product sales (1) (2) 5,684 2,877 13,152 15,123 Total product sales revenues $ 53,304 $ 57,397 $ 112,634 $ 123,613 Total revenues $ 161,299 $ 169,511 $ 443,662 $ 461,362 (1) Revenue recognized over time. (2) Revenue recognized at a point in time. (3) Compression equipment includes sales to customers outside of the U.S. The compression fabrication business for sales to U.S. customers that was previously included in our product sales segment is now included in discontinued operations. Three Months Ended September 30, Nine Months Ended September 30, Revenue by Geographical Regions 2021 2020 2021 2020 North America $ 2,099 $ 13,364 $ 11,524 $ 31,694 Latin America 68,507 60,302 197,717 195,451 Middle East and Africa 81,034 69,682 200,192 177,768 Asia Pacific 9,659 26,163 34,229 56,449 Total revenues $ 161,299 $ 169,511 $ 443,662 $ 461,362 The North America region is primarily comprised of our operations in the U.S. The Latin America region is primarily comprised of our operations in Argentina, Bolivia, Brazil and Mexico. The Middle East and Africa region is primarily comprised of our operations in Bahrain, Iraq, Oman, Nigeria and the United Arab Emirates. The Asia Pacific region is primarily comprised of our operations in China, Indonesia, Singapore and Thailand. The following table summarizes the expected timing of revenue recognition from unsatisfied performance obligations (commonly referred to as backlog) as of September 30, 2021 (in thousands): Contract Operations Product Sales Segment Segment Remainder of 2021 $ 79,586 $ 76,553 2022 247,050 195,242 2023 251,867 59,787 2024 230,749 16,045 2025 209,521 17,557 Thereafter 414,537 — Total backlog $ 1,433,310 $ 365,184 Certain of our aftermarket services contracts are subject to cancellation or modification at the election of the customer. If the primary component of our contract operations contracts is the lease component, the contracts are accounted for as operating leases. For these contracts, revenues are recognized on a straight-line basis. As of September 30, 2021, the total value of our contracts operations backlog accounted for as operating leases was approximately $ 504.2 million , of which $ 10 million is expected to be recognized in the remainder of 2021, $ 44 million is expected to be recognized in 2022, $ 104 million is expected to be recognized in 2023, $ 94 million is expected to be recognized in 2024 and $ 79 million is expected to be recognized in 2025. Contract operations revenue recognized as operating leases for the nine months ended September 30, 2021 was approximately $ 27 million . Our product sales backlog includes contracts where there is a significant financing component. As of September 30, 2021, we had approximately $ 43 million expected to be recognized in future periods as interest income within our product sales segment. Contract Assets and Contract Liabilities The following table provides information about accounts receivables, net, contract assets and contract liabilities from contracts with customers (in thousands): September 30, 2021 December 31, 2020 Accounts receivables, net $ 179,594 $ 198,028 Contract assets and contract liabilities: Current contract assets 65,710 32,642 Long-term contract assets 18,169 33,563 Current contract liabilities 92,493 100,123 Long-term contract liabilities 56,763 80,499 During the nine months ended September 30, 2021, revenue recognized from contract operations services included $ 52.0 million of revenue deferred in previous periods. Revenue recognized during the nine months ended September 30, 2021 from product sales performance obligations partially satisfied in previous periods was $ 87.8 million , of which $ 27.7 million was included in billings in excess of costs at the beginning of the period. The increase in current contract assets during the nine months ended September 30, 2021 is primarily due to the timing of milestone billings in the Middle East and Africa region. The decrease in long-term contract assets during the nine months ended September 30, 2021 was primarily due to the timing of milestones billings in the Middle East and Africa region. The decrease in current contract liabilities during the nine months ended September 30, 2021 was primarily driven by the progression of product sales projects and the timing of milestones billings in the Middle East and Africa region. The decrease in long-term contract liabilities during the nine months ended September 30, 2021 was primarily driven by the acceleration of deferred revenue on two separate contracts due to a change in the terms in the Latin America region. Allowance for Doubtful Accounts The Company estimates its reserves using information about past events, current conditions and risk characteristics of each customer, and reasonable and supportable forecasts relevant to assessing risk associated with the collectability of accounts receivables, contract assets and long-term note receivables. The Company’s customer base has generally similar collectability risk characteristics, although larger customers may have lower risk than smaller independent customers. The allowance for doubtful accounts as of September 30, 2021 and changes for the nine months then ended are as follows (in thousands): Balance at December 31, 2020 $ 10,803 Write-offs during the period ( 496 ) Balance at September 30, 2021 $ 10,307 |