Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 376,562	$ 763,173
Cost of sales	5,752,700	7,981,413
Warranty expense	92,191	7,972,152
Gross loss	(5,468,329)	(15,190,392)
Operating expenses
Selling, general and administrative	10,199,534	11,485,482
Research and development	8,199,074	7,391,693
Total operating expenses	18,398,608	18,877,175
Total operating expenses	15,849,800	0
Loss from operations	(8,017,137)	(34,067,567)
Interest expense, net	29,145,690	2,434,749
Loss before provision for income taxes	(37,162,827)	(36,502,316)
Provision for income taxes	0	0
Net loss	$ (37,162,827)	$ (36,502,316)
Income (loss) from continuing operations, per basic and diluted share (in usd per share)	$ (0.58)	$ (0.74)
Weighted average number of shares outstanding, basic and diluted (in shares)	64,314,756	50,377,909