The number of the Company's Board members currently serving on the Investee's Board.

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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.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in ImaginAb (Details) - Imaginab [Member] $ in Millions	Mar. 14, 2023 USD ($) shares	Mar. 18, 2021 USD ($) shares	Dec. 31, 2023 USD ($) Director	Sep. 14, 2023 shares	Dec. 31, 2022 USD ($)
Equity Investment
Transaction costs to acquire equity securities		$ 0.4
Number of Investee's Board members currently representing the Company \| Director			1
Equity and long-term investments at fair value			$ 7.6		$ 6.4
Consolidated Investees
Equity Investment
Equity method investment ownership percentage			12.40%		12.70%
Series C preferred stock
Equity Investment
Number of shares to be purchased under the securities purchase agreement \| shares		4,051,724
Amount of securities purchase agreement		$ 4.7
Series C2 Preferred Stock
Equity Investment
Number of shares to be purchased under the securities purchase agreement \| shares	270,568			405,852
Amount of securities purchase agreement	$ 0.6
One of ImaginAb's Common Stockholders \| Common stock
Equity Investment
Number of shares to be purchased under the securities purchase agreement \| shares		4,097,157
Amount of securities purchase agreement		$ 1.3