Refundable Research and Development Credit and Income Taxes	9 Months Ended
Sep. 30, 2020
Refundable Research And Development Credit And Income Taxes [Abstract]
Refundable Research And Development Credit And Income Taxes	10. Refundable Research and Development Credit and Income Taxes The Company earns non-income related refundable Australian research and development credits that are settled and paid to the Company annually. The associated income from the credits are an offset to research and development expenses. The Company’s income tax provision is computed based on the federal statutory rate and the average state statutory rates, net of the related federal benefit. For the three and nine months ended September 2020 and 2019, there were no current or deferred income tax expenses or benefits due to the Company’s net losses, research and development credits and increases in its deferred tax asset valuation allowance during those periods. The Company’s estimate of the realizability of the deferred tax asset is dependent on estimates of projected future levels of taxable income. In analyzing future taxable income levels, the Company considered all evidence currently available, both positive and negative. Based on this analysis, the Company has recorded a valuation allowance for all deferred tax assets as of September 30, 2020.

Refundable Research and Development Credit and Income Taxes

9 Months Ended

Sep. 30, 2020

Refundable Research And Development Credit And Income Taxes [Abstract]

Refundable Research And Development Credit And Income Taxes

10. Refundable Research and Development Credit and Income Taxes

The Company earns non-income related refundable Australian research and development credits that are settled and paid to the Company annually. The associated income from the credits are an offset to research and development expenses.

The Company’s income tax provision is computed based on the federal statutory rate and the average state statutory rates, net of the related federal benefit. For the three and nine months ended September 2020 and 2019, there were no current or deferred income tax expenses or benefits due to the Company’s net losses, research and development credits and increases in its deferred tax asset valuation allowance during those periods.

The Company’s estimate of the realizability of the deferred tax asset is dependent on estimates of projected future levels of taxable income. In analyzing future taxable income levels, the Company considered all evidence currently available, both positive and negative. Based on this analysis, the Company has recorded a valuation allowance for all deferred tax assets as of September 30, 2020.