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PROPERTY AND EQUIPMENT - Amounts capitalized for internal-use software and included in property and equipment additions on the consolidated statements of cash flows (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Property and equipment |  |  |
Capitalized internal-use software | $ 58,530 | $ 33,386 | $ 20,955
Cloud-based customer solutions |  |  |
Property and equipment |  |  |
Capitalized internal-use software | 28,918 | 19,837 | 14,710
Internal systems and tools |  |  |
Property and equipment |  |  |
Capitalized internal-use software | 26,354 | 11,491 | 3,176
Internal-Use Software |  |  |
Property and equipment |  |  |
Capitalized internal-use software | $ 55,272 | $ 31,328 | $ 17,886

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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