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DEBT - Narrative (Details) |  |  |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 11, 2021 USD ($) | Jul. 29, 2019 USD ($) lender $ / shares shares | Feb. 01, 2019 USD ($) | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Mar. 09, 2020 $ / shares shares | Dec. 17, 2019 USD ($)
Debt offering expenses |  |  |  |  |  |  |  |  |  |
Incurred expenses related to Credit Agreement and Securities Purchase Agreement |  | $ 1,100,000 | $ 50,000,000.0 |  |  |  |  |  |  |
Interest expense |  |  |  | $ 1,000,000.0 | $ 1,000,000.0 | $ 1,900,000 | $ 1,900,000 |  |  |
Discount cost |  |  |  | 100,000 | $ 100,000 | 200,000 | $ 200,000 |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Prepayment fee, percentage | 4.00% |  |  |  |  |  |  |  |  |
Repayments on outstanding debt | $ 36,500,000 |  |  |  |  |  |  |  |  |
Credit Agreement | Level 3 |  |  |  |  |  |  |  |  |  |
Debt offering expenses |  |  |  |  |  |  |  |  |  |
Debt instrument, fair value |  |  |  | 36,900,000 |  | 36,900,000 |  |  |  |
Amended And Restated Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  | 35,000,000.0 |  | 35,000,000.0 |  | $ 35,000,000.0 |  |
Remaining borrowing capacity |  |  |  | $ 15,000,000.0 |  | $ 15,000,000.0 |  | $ 15,000,000.0 |  |
Base interest rate |  |  |  | 8.25% |  | 8.25% |  |  |  |
Amended And Restated Credit Agreement | One-month LIBOR |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 2.75% |  |  |  |
Amended and Restated Credit Agreement, Trench 1 Loan |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  | 15,000,000 |  |  |  |  |  |  |  |
Amended and Restated Credit Agreement, Trench 2 Loan |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 20,000,000
Debt offering expenses |  |  |  |  |  |  |  |  |  |
Incurred expenses related to Credit Agreement and Securities Purchase Agreement |  | $ 300,000 |  |  |  |  |  |  |  |
Amended and Restated Credit Agreement, Trench 3 Loan |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  | $ 15,000,000 |  | $ 15,000,000 |  |  |  |
Shareholder Lender | Foamix |  |  |  |  |  |  |  |  |  |
Warrants issued |  |  |  |  |  |  |  |  |  |
Number of ordinary shares that may be purchased by exercise of warrants (in shares) | shares |  | 1,100,000 |  | 495,165 |  | 495,165 |  |  | 651,640 |
Warrant exercise price (in dollars per share) | $ / shares |  | $ 2.09 |  | $ 4.64 |  | $ 4.64 |  |  | $ 3.53 |
Shareholder Lender | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  | $ 50,000,000 |  |  |  |  |  |  |  |
Registered offering per securities purchase agreement | Shareholder Lender |  |  |  |  |  |  |  |  |  |
Debt instrument information |  |  |  |  |  |  |  |  |  |
Number of lenders involved | lender |  | 1 |  |  |  |  |  |  |  |
Gross proceeds from issuance of common stock |  | $ 14,000,000 |  |  |  |  |  |  |  |

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