Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	$ (11,320,000)	$ (8,239,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	816,000	666,000
Stock based compensation expense	30,000	184,000
Amortization of debt discount/premium, net	5,396,000	1,897,000
Reserve for excess and slow-moving inventories	480,000	654,000
Loss on retirement of debt	326,000
Net change in operating assets and liabilities:
Accounts receivable	1,496,000	(1,323,000)
Inventories	1,264,000	582,000
Prepaid expenses and other assets	791,000	757,000
Accounts payable	(226,000)	(210,000)
Interest payable – related party	(289,000)	(1,132,000)
Accrued payroll and related expenses	52,000	145,000
Deferred revenue – short-term	37,000	122,000
Other current liabilities	255,000	446,000
Long-term deferred revenue and other noncurrent liabilities	(786,000)	(650,000)
Net cash used in operating activities	(1,678,000)	(6,101,000)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Capital expenditures	(1,541,000)	(308,000)
Net cash used in investing activities	(1,541,000)	(308,000)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from issuance of common stock, net of expenses	2,640,000	3,037,000
Proceeds from the exercise of warrants	421,000
Net cash provided by financing activities	3,061,000	3,037,000
Effects of foreign currency rate changes on cash and cash equivalents	(1,000)	(5,000)
Net increase (decrease) in cash and cash equivalents	(159,000)	(3,377,000)
Cash and cash equivalents at beginning of period	4,177,000	7,280,000
Cash and cash equivalents at end of period	4,018,000	3,903,000
Supplemental Cash Flow Information [Abstract]
Cash paid for related party interest	1,492,000	2,628,000
Cash paid for interest	140,000	180,000
Right-to-use asset acquired under operating lease, related party		3,863,000
Related Party Convertible Debt Price Reset [Member]
Supplemental Cash Flow Information [Abstract]
Convertible note price reset	6,820,000
Nonrelated Party [Member]
Supplemental Cash Flow Information [Abstract]
Convertible note price reset	43,000
Related party convertible note converted to common stock	603,000
Related Party [Member]
Supplemental Cash Flow Information [Abstract]
Related party convertible note converted to common stock	700,000	$ 3,000,000
January 2023 Convertible Note [Member]
Supplemental Cash Flow Information [Abstract]
Fair value of amended convertible note issued in connection with the extinguishment of original convertible note	1,239,000
July 2023 Convertible Note [Member]
Supplemental Cash Flow Information [Abstract]
Fair value of amended convertible note issued in connection with the extinguishment of original convertible note	$ 484,000