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EQUITY AND CASH COMPENSATION UNDER THE PPG AGREEMENTS - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Long-term Purchase Commitment [Line Items] |  |  |
Percent of services payable in cash or shares | 50.00% |  |
Issuance of common stock in connection with materials and license agreements (in shares) | 0 |  |
Charges to expense for cash portion of reimbursement of expenses | $ 9.1 | $ 7.3 | $ 3.6
New OLED Materials Agreement and OLED Materials Agreement [Member] | Weighted Average |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Minimum average closing price of common stock (in dollars per share) | $ 20 |  |

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
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