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RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE - Summary of Receivable (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Receivables [Abstract] |  |
Accounts receivable | $ 139,670 | $ 182,717
Unbilled receivables | 182,403 | 226,714
Long-term unbilled receivables | 108,285 | 129,789
Total receivables | $ 430,358 | $ 539,220

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- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
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