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RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE | 12 Months Ended
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Dec. 31, 2023
Receivables [Abstract] |
RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE | 4. RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE Receivables
(in thousands) | December 31, 2023 |  | December 31, 2022
Accounts receivable, net | $ | 300,173 |  |  | $ | 255,150 |
Unbilled receivables, net | 237,379 |  |  | 213,719 |
Long-term unbilled receivables, net | 85,402 |  |  | 95,806 |
| $ | 622,954 |  |  | $ | 564,675 |
Unbilled receivables Unbilled receivables are client-committed amounts for which revenue recognition precedes billing. Billing is solely subject to the passage of time. Unbilled receivables by expected collection date:
(Dollars in thousands) | December 31, 2023
1 year or less | $ | 237,379 |  | 74 | %
1-2 years | 62,585 |  | 19 | %
2-5 years | 22,817 |  | 7 | %
| $ | 322,781 |  | 100 | %
Unbilled receivables by contract effective date:
(Dollars in thousands) | December 31, 2023
2023 | $ | 208,783 |  | 65 | %
2022 | 56,216 |  | 17 | %
2021 | 46,473 |  | 14 | %
2020 | 8,683 |  | 3 | %
2019 and prior | 2,626 |  | 1 | %
| $ | 322,781 |  | 100 | %
Contract assets Contract assets are client-committed amounts for which revenue recognized exceeds the amount billed to the client, and billing is subject to conditions other than the passage of time, such as the completion of a related performance obligation.
(in thousands) | December 31, 2023 |  | December 31, 2022
Contract assets (1) | $ | 16,238 |  |  | $ | 17,546 |
Long-term contract assets (2) | 20,635 |  |  | 16,470 |
| $ | 36,873 |  |  | $ | 34,016 |
(1) Included in other current assets. (2) Included in other long-term assets. Deferred revenue Deferred revenue consists of billings and payments received in advance of revenue recognition.
(in thousands) | December 31, 2023 |  | December 31, 2022
Deferred revenue | $ | 377,845 |  |  | $ | 325,212 |
Long-term deferred revenue (1) | 2,478 |  |  | 3,552 |
| $ | 380,323 |  |  | $ | 328,764 |
(1) Included in other long-term liabilities. The change in deferred revenue in 2023 was primarily due to new billings in advance of revenue recognition and $319.5 million of revenue recognized during the period included in deferred revenue as of December 31, 2022.

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- Definition Receivables, Contract Assets, And Deferred Revenue [Text Block] + References No definition available. + Details
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- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration