Income Taxes, NOL and Tax Credit Carryforwards and Income Tax Uncertainties (Details) $ in Millions	12 Months Ended
Dec. 31, 2020 USD ($)
Income Taxes [Abstract]
Tax bad debt deduction under the new method	$ 4.3
Period for recapturing excess tax bad debt reserve into taxable income	4 years
Federal [Member]
Income Taxes [Abstract]
Net operating loss carryforwards	$ 5.4
Federal [Member] \| General Business Tax Credit Carryforward [Member]
Income Taxes [Abstract]
Tax credit carryforward	2.0
California [Member]
Income Taxes [Abstract]
Net operating loss carryforwards	$ 27.0

The amount of bad debt reserve which will be reclassified from reserve method to charge-off method.

No definition available.

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- Definition

The period over which reserve for excess tax bad debt may be charged evenly to taxable income, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

+ Details

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

+ Details

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- Details

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- Details

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- Details

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