Consolidated Statements of Operations and Comprehensive Loss - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net revenues	$ 9,294,000	$ 9,744,000
Cost of revenues	5,801,000	8,485,000
Gross profit	3,493,000	1,259,000
Expenses:
Selling, general and administrative	8,515,000	7,677,000
Research and development	2,209,000	2,477,000
Total operating expenses	10,724,000	10,154,000
Loss from operations	(7,231,000)	(8,895,000)
Other income / (expense):
Interest expense	(6,103,000)	(7,908,000)
Gain on extinguishment of debt	(652,000)
Employee retention tax credit and other income / (expense)	802,000	(8,000)
Total other income / (expense)	(4,649,000)	(7,916,000)
Net loss	(11,880,000)	(16,811,000)
Loss attributable to non-controlling interests	(501,000)	(460,000)
Net loss attributable to common stockholders	(11,379,000)	(16,351,000)
Net loss	(11,880,000)	(16,811,000)
Other comprehensive loss:
Foreign currency translation adjustments	15,000	14,000
Comprehensive loss	(11,865,000)	(16,797,000)
Comprehensive loss attributable to non-controlling interests	(501,000)	(460,000)
Comprehensive loss attributable to common stockholders	$ (11,364,000)	$ (16,337,000)
Per share data:
Basic and diluted net loss per common share (in dollars per share)	$ (0.96)	$ (2.60)
Weighted average common shares outstanding Basic and diluted (in shares)	11,796,065	6,277,986