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FAIR VALUE MEASUREMENTS - Additional Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) position | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Number of other equity investments sold | position |  |  | 2 |  |
Unrealized gain on investments |  |  | $ 6,400,000 |  |
Impairment on other equity method investments |  |  |  | $ 6,700,000 |
Operating lease, impairment | $ 10,500,000 |  | 6,800,000 | 16,000,000 |
Goodwill impairment |  | $ 0 | 0 | 109,486,000 | $ 0
Impairment of long-lived assets |  |  | 870,000 | 15,178,000 |
Non-cash impairment charges related to long-lived assets |  |  |  | 44,000,000 |
3.25% Convertible Senior Notes due 2022 | Senior Notes |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Estimated fair value of convertible notes |  |  |  | 263,300,000 |
Other equity investments |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Unrealized gain on investments |  |  | 89,100,000 |  |
Impairment on other equity method investments | $ 6,700,000 |  |  |  |
Restructuring and related charges |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Operating lease, impairment |  |  | 7,700,000 |  |
Impairment of long-lived assets |  |  | 870,000 | 5,613,000 |
Non-cash impairment charges related to long-lived assets |  |  |  | 21,600,000 |
Restructuring and related charges | North America |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Impairment of long-lived assets |  |  | $ 602,000 | $ 0 |

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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=124268079&loc=d3e32787-111569 + Details
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