Nature of Business and Significant Accounting Policies, Nature of Business, Going Concern, Basis of Presentation, Accounts Receivable and Inventories (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Customer	Dec. 31, 2020 USD ($) Customer
Going Concern [Abstract]
Accumulated deficit	$ (252,916,000)	$ (233,338,000)
Net proceeds from issuance of public offering	52,200,000
Proceeds from exercise of investor warrants	1,300	4,115,000
Basis of Presentation [Abstract]
Gain on dissolution of foreign subsidiary	$ 1,200,000
Accounts Receivable [Abstract]
Accounts receivables maximum credit period from invoice date	30 days
Allowance for doubtful accounts	$ 0	0
Inventories [Abstract]
Finished Goods	1,409,000	1,343,000
Work in Process	276,000	342,000
Raw Materials	1,158,000	1,272,000
Total	$ 2,843,000	$ 2,957,000
Accounts Receivable [Member]
Revenue, Performance Obligation [Abstract]
Number of major customers | Customer	2	0
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Revenue, Performance Obligation [Abstract]
Concentration risk percentage	12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Revenue, Performance Obligation [Abstract]
Concentration risk percentage	11.00%