Discontinued Operations - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of discontinued operations	$ 0	$ (19)
Proceeds from sale of discontinued operations	0	6,844
Medical Device Sales And Service Post-Warranty Service Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation	0	2
Amortization of intangible assets	0	13
Gain on sale of discontinued operations	(350)	(6,161)
Share-based compensation	0	0
Proceeds from sale of discontinued operations	$ 0	$ 6,844