Cumulative change in ownership percentage.

No definition available.

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- Definition

Deferred tax assets tax credit carry forward expiration year.

+ References

No definition available.

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- Definition

Income taxes line Items.

+ References

No definition available.

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- Definition

Net Operating Loss Carryforward Expiration Year

+ References

No definition available.

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- Definition

Operating loss carryforwards available to offset future taxable income.

+ References

No definition available.

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- Definition

Percentage of future taxable income offset by operating loss carryforwards.

+ References

No definition available.

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- Definition

Period for cumulative change in ownership.

+ References

No definition available.

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- Definition

Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

+ References

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

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

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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
U.S. federal statutory tax rate	21.00%	21.00%
Valuation allowance	$ 8,520,000	$ 7,455,000
Increase in valuation allowance	$ 1,100,000
Cumulative change in ownership percentage	50.00%
Period for cumulative change in ownership	3 years
Unrecognized tax benefit that would impact effective tax rate, if recognized	$ 9,000
Income tax interest and penalties accrued	61,000	3,000
Income tax interest and penalties	57,000	$ 1,000
California
Income Taxes [Line Items]
Net operating loss carry forwards	$ 5,700,000
Net operating loss carry forwards, expire period	2028
Federal
Income Taxes [Line Items]
Net operating loss carry forwards	$ 19,900,000
Net operating loss carry forwards, expire period	2022
Operating loss carryforward available to offset future taxable income	$ 2,600,000
Percentage of future taxable income offset by operating loss carryforward			80.00%
Tax credit carry forwards	$ 1,300,000
Tax credit carry forwards, expire period	2026
State
Income Taxes [Line Items]
Tax credit carry forwards	$ 1,400,000