Final Consideration including amounts released to settle

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Gain on sale of non-financial assets

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TerSera Maximum Development, Regulatory and Commercial Milestones

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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.

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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Asset Sale (Details) - USD ($) $ in Thousands	12 Months Ended
Asset Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Asset Retirement Obligation Disclosure [Abstract]
Proceeds from Sale of Productive Assets	$ 160,385	$ 0	$ 0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	(12,200)	(15,400)	(33,700)
Severance Costs	5,500
Debt Instrument
Severance Costs	5,500
Gain on sale of non-financial assets	132,585	$ 0	$ 0
TerSera Maximum Development, Regulatory and Commercial Milestones	65,000
Final Consideration including amounts released to settle	160,000
541713 Research and Development in Nanotechnology
Asset Retirement Obligation Disclosure [Abstract]
Severance Costs	2,500
Debt Instrument
Severance Costs	2,500
General and Administrative Expense
Asset Retirement Obligation Disclosure [Abstract]
Severance Costs	3,000
Debt Instrument
Severance Costs	$ 3,000