Discontinued Operations (Net loss from discontinued operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Total revenue	$ 0	$ 0	$ 0	$ 0
Operating expenses:
Engineering, design and development	0	0	0	0
Sales and marketing	0	0	0	0
General and administrative	0	8,871	0	13,426
Depreciation and amortization	0	0	0	0
Total operating expenses	0	8,871	0	13,426
Operating loss	0	(8,871)	0	(13,426)
Total other (income) expense	0	0	0	0
Loss before income taxes	0	(8,871)	0	(13,426)
Income tax provision	0	(100)	0	0
Net loss from discontinued operations, net of tax	0	(8,771)	0	(13,426)
Service [Member]
Revenue:
Total revenue	0	0	0	0
Product [Member]
Revenue:
Total revenue	0	0	0
Cost of Service Revenue [Member]
Revenue:
Total revenue	0	0	0	0
Cost of Equipment Revenue [Member]
Revenue:
Total revenue	$ 0	$ 0	$ 0	$ 0