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NATURE OF OPERATIONS (Details) $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 11, 2021 USD ($) | Aug. 06, 2021 USD ($) | Feb. 12, 2021 shares | Jun. 30, 2021 USD ($) shares | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) segment shares | Jun. 30, 2020 USD ($) | Dec. 31, 2021 employee | Sep. 30, 2021 USD ($) | Jul. 19, 2021 shares | Feb. 11, 2021 shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of segments | segment |  |  |  |  |  | 1 |  |  |  |  |  |  |
Reverse stock split, conversion ratio (share/share) |  |  | 0.25 |  |  |  |  |  |  |  |  |  |
Common stock shares authorized (in shares) | shares |  |  | 75,000,000 | 75,000,000 |  | 75,000,000 |  |  |  |  |  | 75,000,000 |
Net loss |  |  |  | $ 19,924 | $ 167,440 | $ 40,474 | $ 207,673 |  |  |  |  |  |
Cash used in operations |  |  |  |  |  | (28,808) | (88,070) |  |  |  |  |  |
Cash and investments |  |  |  | 104,000 |  | 104,000 |  |  |  |  |  |  |
Accumulated deficit |  |  |  | (606,670) |  | (606,670) |  |  |  |  |  | $ (566,196) |
Pro forma cash, cash equivalents, restricted cash and restricted cash equivalents |  |  |  | 104,011 | $ 97,366 | 104,011 | $ 97,366 |  |  |  |  | $ 58,418 | $ 44,584
Amended And Restated Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding debt |  |  |  | $ 35,000 |  | $ 35,000 |  |  |  |  |  |  |
Employee Severance | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees expected to be terminated | employee |  |  |  |  |  |  |  | 70 |  |  |  |  |
Employee Severance | Minimum | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Employee termination costs |  |  |  |  |  |  |  |  | $ 1,500 |  |  |  |
Employee Severance | Maximum | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Employee termination costs |  |  |  |  |  |  |  |  | $ 2,000 |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock shares authorized (in shares) | shares |  |  |  |  |  |  |  |  |  | 150,000,000 |  |  |
Repayments on outstanding debt | $ 36,500 |  |  |  |  |  |  |  |  |  |  |  |
Prepayment fee, percentage | 4.00% |  |  |  |  |  |  |  |  |  |  |  |
Licensing Agreements | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for licensing agreements |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |
Royalty percent, maximum |  | 10.00% |  |  |  |  |  |  |  |  |  |  |
Topical BETi Option Agreement | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for licensing agreements |  | $ 500 |  |  |  |  |  |  |  |  |  |  |
Milestone payments upon achieving certain criteria, maximum |  | 15,750 |  |  |  |  |  |  |  |  |  |  |
Oral BETi Option Agreement | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for licensing agreements |  | 4,000 |  |  |  |  |  |  |  |  |  |  |
Milestone payments upon achieving certain criteria, maximum |  | $ 43,750 |  |  |  |  |  |  |  |  |  |  |
Menlo - Premerger |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock shares authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 300,000,000 |  |

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