Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net revenues	$ 2,572,000	$ 2,663,000
Cost of revenues	1,467,000	1,723,000
Gross profit	1,105,000	940,000
Expenses:
Selling, general and administrative	1,844,000	1,693,000
Research and development	306,000	456,000
Total operating expenses	2,150,000	2,149,000
Loss from operations	(1,045,000)	(1,209,000)
Other income (expenses):
Interest expense	(3,903,000)	(823,000)
Loss on retirement of debt	(239,000)	0
Other income (expenses)	(5,000)	4,000
Total other expenses	(4,137,000)	(827,000)
Net loss	(5,182,000)	(2,036,000)
Loss attributable to noncontrolling interests	(96,000)	(126,000)
Net loss attributable to common stockholders	(5,086,000)	(1,910,000)
Net loss	(5,182,000)	(2,036,000)
Other comprehensive loss:
Foreign currency translation adjustments gain (loss)	(6,000)	14,000
Comprehensive loss	(5,188,000)	(2,022,000)
Comprehensive loss attributable to noncontrolling interests	(96,000)	(126,000)
Comprehensive loss attributable to common stockholders	$ (5,092,000)	$ (1,896,000)
Per share data:
Basic and diluted net loss per common share (in dollars per share)	$ (4.07)	$ (6.63)
Weighted average common shares outstanding basicand diluted (in shares)	1,249,576	288,003