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.

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No definition available.

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- Definition

Net Operating Loss Carryforward Expiration Year

+ References

No definition available.

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- Definition

Period for cumulative change in ownership.

+ References

No definition available.

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- Definition

ATax cuts and jobs act of 2017, incomplete accounting, change in tax rate, decrease in deferred tax assets.

+ References

No definition available.

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Tax cuts and jobs act of 2017 incomplete accounting, change in tax rate, increase in tax expense.

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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Amount recognized for uncertainty in income taxes classified as current.

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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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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, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
U.S. federal statutory tax rate		34.00%	34.00%	34.00%
Valuation allowance		$ 6,453,466	$ 9,028,241
Net change in total valuation allowance		$ (2,574,764)
Cumulative change in ownership percentage		50.00%
Period for cumulative change in ownership		3 years
Increase in tax expense		$ 2,800,000
Decrease in net deferred tax assets		2,800,000
Changes in liability for uncertain tax benefits		0
Income tax interest and penalties accrued		785	$ 0
Income tax interest and penalties		$ 785
Scenario, Plan
Income Taxes [Line Items]
U.S. federal statutory tax rate	21.00%
Maximum
Income Taxes [Line Items]
U.S. federal statutory tax rate		35.00%
CALIFORNIA
Income Taxes [Line Items]
Net operating loss carry forwards		$ 5,715,729
Net operating loss carry forwards, expire period		2028
Federal
Income Taxes [Line Items]
Net operating loss carry forwards		$ 19,152,650
Net operating loss carry forwards, expire period		2020
Tax credit carry forwards		$ 936,228
Tax credit carry forwards, expire period		2026
State
Income Taxes [Line Items]
Tax credit carry forwards		$ 1,192,688