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Summary of Significant Accounting Policies (Details Narrative) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 25, 2021 | Dec. 31, 2020
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Unrealized Loss on Securities |  |  | $ 67,000 | $ 78,000 |  |
Increase In Fair Value Of Investment Securities |  |  | 164,000 |  |  |
Inventory Adjustments | $ 87,000 |  | $ 87,000 |  |  | $ 167,000
Estimated useful lives description |  |  | ranges of estimated asset lives: building and improvements – ten to thirty-nine years; machinery and equipment including lab equipment – three to seven years; computer equipment and software – three to five years; and furniture and fixtures – five years |  |  |
Cash and Cash Equivalents, at Carrying Value | 17,677,000 |  | $ 17,677,000 |  |  | 6,816,000
Cash | 17,900,000 |  | 17,900,000 |  |  |
Cash, FDIC Insured Amount | 500,000 |  | 500,000 |  |  |
Cash, Uninsured Amount | 17,400,000 |  | 17,400,000 |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 9,142,000 | $ 3,623,000 | 24,413,000 | 5,511,000 |  |
Estimated sales returns, continuing operation | 321,000 |  | 321,000 |  |  | 291,000
Contract with Customer, Liability | 233,000 |  | 233,000 |  |  | 331,000
Share-based Payment Arrangement, Noncash Expense | 1,076,000 | 198,000 | 1,504,000 | 396,000 |  |
Research and Development Expense | 93,000 | 65,000 | 208,000 | 124,000 |  |
Cooperative Incentive Promotion Costs [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated sales returns, continuing operation | 214,000 |  | 214,000 |  |  | $ 463,000
Advertising and incentive promotion expenses, continuing operation | 111,000 | 49,000 | 279,000 | 96,000 |  |
Consumer Products [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 1,605,000 | 3,623,000 | 4,139,000 | 5,511,000 |  |
Diagnostic Services [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 7,537,000 |  | $ 20,274,000 |  |  |
Investment Shares [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Investment Owned, Balance, Shares |  |  |  |  | 1,260,619 |
Investment Owned, at Fair Value |  |  |  |  | $ 315,000 |
Share Price |  |  |  |  | $ 0.38 |
Marketable Securities [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Debt Instrument, Interest Rate During Period |  |  | 0.94% |  |  |
Marketable Securities [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Debt Instrument, Interest Rate During Period |  |  | 3.35% |  |  |

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