Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.19.1
Income Taxes - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Tax Disclosure [Abstract]    
Income tax provision $ 0 $ 0
Research and development tax credit as a reduction of payroll expenses $ 93,000