Nature Of Operations And Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020 USD ($) shares	Sep. 30, 2019 USD ($) shares	Sep. 30, 2020 USD ($) item customer shares	Sep. 30, 2019 USD ($) shares	Dec. 31, 2019 USD ($) customer shares	Dec. 31, 2018 USD ($)
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of operating subsidiaries | item			2
Cash and cash equivalents	$ 4,251	$ 6,971	$ 4,251	$ 6,971	$ 5,969	$ 991
Working capital	6,700		6,700
Net cash used in operating activities			1,857	2,329
Revenue	3,541	3,032	9,431	9,345
Slotting fees and promotion allowances	526	626	$ 1,200	1,500
Customers payment from receipt of invoice period			30 days
Allowances for doubtful accounts	84		$ 84		44
Impairment losses			0		$ 0
Shipping and Handling [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Revenue	$ 18	$ 13	$ 54	$ 57
Maximum [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Discounts for certain customers for payments made within 15 days			2.00%
One Major Customer [Member] | Outstanding Accounts Receivable [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of customers | customer			1
Customer, percentage			30.00%
Two Major Customers [Member] | Outstanding Accounts Receivable [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of customers | customer					2
Customer, percentage					26.00%
Stock Options [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Stock options outstanding, shares | shares	3,355,689	3,696,093	3,355,689	3,696,093	3,495,601
Convertible Stock [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Shares issuable upon conversion of Convertible Notes | shares			5,302,778	5,878,300
Restricted Stock [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Unvested restricted stock units, shares | shares	0	149,824	0	149,824	149,824