Discontinued Operations - Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating costs and expenses:
Income (loss) from discontinued operations, net of income taxes	$ (192)	$ 10,404
Commercial Product Portfolio | Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues	0	10,668
Operating costs and expenses:
Selling, general and administrative	0	219
Research and development	59	(43)
Total operating costs and expenses	192	264
Income (loss) from discontinued operations before income taxes	(192)	10,404
Provision for income taxes from discontinued operations	0	0
Income (loss) from discontinued operations, net of income taxes	(192)	10,404
Commercial Product Portfolio | Sale | Product sales, net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues	0	10,668
Operating costs and expenses:
Cost of sales (excluding amortization of intangible assets)	$ 133	$ 88