Discontinued Operations - Components of Gain From Discontinued Operations (Details) - USD ($) $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2021  | 
Sep. 30, 2020  | 
Sep. 30, 2021  | 
Sep. 30, 2020  | 
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| Major classes of line items constituting gain from discontinued operations: | ||||
| Loss from discontinued operations, before income taxes. | $ 0 | $ (511) | $ (1,022) | $ 28,449 | 
| (Loss)/gain on disposal of discontinued operations | (1,022) | 30,672 | ||
| Total (loss)/gain from discontinued operations, net of income taxes | 0 | (511) | (1,022) | 28,449 | 
| Spaceflight Inc. | ||||
| Major classes of line items constituting gain from discontinued operations: | ||||
| Revenue - launch services | 0 | 0 | 0 | 26,925 | 
| Total operating cost and expenses | 0 | 511 | 0 | 29,129 | 
| Operating loss | 0 | (511) | 0 | (2,204) | 
| Loss from discontinued operations, before income taxes. | 0 | (511) | 0 | (2,223) | 
| (Loss)/gain on disposal of discontinued operations | 0 | 0 | (1,022) | 30,672 | 
| Total (loss)/gain from discontinued operations, net of income taxes | $ 0 | $ (511) | $ (1,022) | $ 28,449 | 
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- Definition Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of operating expense attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Details 
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