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Capitalization - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
May 29, 2020 | Aug. 31, 2019 | Jun. 30, 2020 | Jun. 30, 2020 | Apr. 29, 2020
Warrants |  |  |  |  |
Consideration received on transaction |  |  | $ 5,400 | $ 19,000 |
Number of shares issued in transaction (in shares) |  |  | 106,309 | 368,514 |
Payments for asset acquisitions, share, value |  |  | $ 42,869 | $ 42,869 |
Rights Exchange Agreement [Member] |  |  |  |  |
Warrants |  |  |  |  |
Shares to issue under Rights Exchange Agreement |  |  |  |  | 2,821,176
Payments for asset acquisitions, share, value |  |  |  | $ 150,500 |
Censa [Member] |  |  |  |  |
Warrants |  |  |  |  |
Payments for asset acquisitions, shares (in shares) | 845,364 |  |  |  |
Payments for asset acquisitions, share, value | $ 42,900 |  |  |  |
Maximum |  |  |  |  |
Warrants |  |  |  |  |
Consideration received on transaction |  | $ 125,000 |  |  |
Weighted Average [Member] |  |  |  |  |
Warrants |  |  |  |  |
Sale of stock, weighted average price per share (in USD per share) |  |  | $ 53.08 | $ 52.89 |

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