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Equity Investment in PACT Pharma - Additional Information (Details) - USD ($) $ in Thousands, shares in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2016
Schedule of Equity Method Investments [Line Items] |  |  |  |
Gains on dilution of equity investment | $ 613 |  | $ 1,229 |
Share of loss from equity method investee | (613) | $ (1,202) | $ (886) |
PACT Pharma |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Investment balance | 0 | 0 |  |
Gains on dilution of equity investment | 2,000 |  |  |
Share of loss from equity method investee | 600 | 0 |  |
Operating losses on equity method investments | 600 | $ 1,200 |  |
Unrealized loss on equity method investments | 1,300 |  |  |
PACT Pharma | Previously Reported |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Losses on accumulated in prior periods of equity investment | $ 1,400 |  |  |
PACT Pharma | Series A Preferred Stock |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Purchase of common stock, shares |  |  |  | 1.0
PACT Pharma | Common Stock |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Purchase of common stock, shares |  |  |  | 3.6

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