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The components of the net deferred income tax asset as of December 31, 2019, 2018, and 2017 are as follows: (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Income Tax Assets:
Net operating losses	$ 180,520,709	$ 140,891,764	$ 99,596,321
R Credit	186,347	186,347	186,347
Total deferred income tax asset	180,707,056	141,078,111	99,782,668
Valuation allowance	(180,707,056)	(141,078,111)	(99,782,668)
Deferred income tax assets, net	$ 0	$ 0	$ 0

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible loss carryforwards, classified as other.

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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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