Income Taxes	3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes The Company did not record a provision for federal income taxes for the three months ended March 31, 2020 because it expects to generate a loss for the year ending December 31, 2020 and the Company’s net deferred tax assets continue to be fully offset by a valuation allowance. Tax expense to date is the result of tax to be withheld in China on a milestone payment in connection with an out-license agreement and recording a deferred tax liability against indefinite lived intangible assets. On March 27, 2020, President Trump signed the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) into law. The CARES Act includes several significant business tax provisions that, among other things, would eliminate the taxable income limit for certain net operating losses (“NOLs”) and allow businesses to carry back NOLs arising in 2018, 2019, and 2020 to the five prior tax years, accelerate refunds of previously generated corporate alternative minimum tax credits, change the business interest limitation under IRC section 163(j) of the Internal Revenue Code from 30 percent to 50 percent, and fix qualified improvement property from the Tax Cuts and Jobs Act of 2017. This new legislation did not materially affect the Company’s income tax position.

Income Taxes

3 Months Ended

Mar. 31, 2020

8. Income Taxes

The Company did not record a provision for federal income taxes for the three months ended March 31, 2020 because it expects to generate a loss for the year ending December 31, 2020 and the Company’s net deferred tax assets continue to be fully offset by a valuation allowance. Tax expense to date is the result of tax to be withheld in China on a milestone payment in connection with an out-license agreement and recording a deferred tax liability against indefinite lived intangible assets.

On March 27, 2020, President Trump signed the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) into law. The CARES Act includes several significant business tax provisions that, among other things, would eliminate the taxable income limit for certain net operating losses (“NOLs”) and allow businesses to carry back NOLs arising in 2018, 2019, and 2020 to the five prior tax years, accelerate refunds of previously generated corporate alternative minimum tax credits, change the business interest limitation under IRC section 163(j) of the Internal Revenue Code from 30 percent to 50 percent, and fix qualified improvement property from the Tax Cuts and Jobs Act of 2017. This new legislation did not materially affect the Company’s income tax position.