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DEBT - Summary of Convertible Debt (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Debt Instrument [Line Items] |  |  |
Convertible notes | $ 1,100,000 |  |
Convertible notes, net of unamortized discount and deferred offering costs | 1,082,033 | $ 1,079,077 | [1]
Total convertible debt, net | 1,082,033 | 1,079,077 |
Total fair value of fixed-rate convertible debt | $ 1,092,701 | $ 1,146,204 |
1.25% Senior Subordinated Convertible Notes Due in May 2027 |  |  |
Debt Instrument [Line Items] |  |  |
Convertible notes stated rate | 1.25% | 1.25% |
Convertible notes | $ 600,000 | $ 600,000 |
Unamortized discount net of deferred offering costs | (9,449) | (10,971) |
Convertible notes, net of unamortized discount and deferred offering costs | 590,551 | 589,029 |
Total fair value of fixed-rate convertible debt | $ 601,488 | $ 625,122 |
0.599% Senior Subordinated Convertible Notes Due in August 2024 |  |  |
Debt Instrument [Line Items] |  |  |
Convertible notes stated rate | 0.599% | 0.599% |
Convertible notes | $ 495,000 | $ 495,000 |
Unamortized discount net of deferred offering costs | (3,518) | (4,952) |
Convertible notes, net of unamortized discount and deferred offering costs | 491,482 | 490,048 |
Total fair value of fixed-rate convertible debt | $ 491,213 | $ 521,082 |
[1] | (1)Certain December 31, 2021 balances have been corrected for an immaterial error identified in the third quarter of 2022. See Note 1 to these Condensed Consolidated Financial Statements for details.

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- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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