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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in InCarda (Details) - InCarda - USD ($) $ / shares in Units, $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 06, 2020 | Dec. 31, 2020
Equity Investment |  |
Equity investment ownership percentage |  | 13.40%
Series C preferred stock and warrants |  |
Equity Investment |  |
Amount of securities purchase agreement | $ 15.0 |
Unrealized gain from fair value changes in equity investments |  | $ 1.1
Impairment of equity investments |  | $ 0.0
Series C preferred stock |  |
Equity Investment |  |
Number of shares to be purchased under the securities purchase agreement | 20,469,432 |
Warrants |  |
Equity Investment |  |
Maximum number of additional shares into which warrants may be converted under the securities purchase agreement | 5,117,358 |
Exercise price of warrants |  | $ 0.7328
Term of warrants |  | 1 year
Equity and long-term investments at fair value |  | $ 1.1

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- Definition The amount the Company agreed to pay for common stock and warrants upon satisfaction of certain closing conditions under the terms of the securities purchase agreement. + References No definition available. + Details
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- Definition The total number of shares to be purchased under the terms of a securities purchase agreement. + References No definition available. + Details
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- Definition The maximum number of additional common stock shares into which the warrants may be converted. + References No definition available. + Details
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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=121548190&loc=d3e32787-111569 + Details
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- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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