Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 1,052,000	$ 4,821,000	$ 5,116,000	$ 14,045,000
Cost of revenue	1,099,000	3,327,000	3,981,000	8,390,000
Gross profit (loss)	(47,000)	1,494,000	1,135,000	5,655,000
Operating expenses:
Research and development	1,449,000	3,442,000	6,831,000	10,870,000
Selling, general and administrative	5,032,000	9,114,000	17,188,000	27,482,000
Restructuring costs			742,000
Total operating expenses	6,481,000	12,556,000	24,761,000	38,352,000
Loss from operations	(6,528,000)	(11,062,000)	(23,626,000)	(32,697,000)
Interest expense, net	(1,209,000)	(1,106,000)	(3,519,000)	(3,239,000)
Other expense, net	(51,000)	(4,000)	(133,000)	(14,000)
Net loss from consolidated companies	(7,788,000)	(12,172,000)	(27,278,000)	(35,950,000)
Loss from minority interest in limited liability company	(168,000)	(132,000)	(431,000)	(539,000)
Comprehensive and net loss	$ (7,956,000)	$ (12,304,000)	$ (27,709,000)	$ (36,489,000)
Net loss per share:
Basic and diluted (in dollars per share)	$ (13.51)	$ (39.07)	$ (54.73)	$ (123.41)
Weighted average shares used in computing net loss per common share:
Basic and diluted (in shares)	588,976	314,899	506,329	295,677