Convertible Note Financing	3 Months Ended
Mar. 31, 2019
Debt Disclosure [Abstract]
Convertible Note Financing	5. Convertible Note Financing On October 2, 2017, the Company issued a convertible promissory note (the “Note”) in an amount of $6.0 million to an investor. The Note accrued interest at 8% per year and had a maturity date of October 2, 2018. The Note was subject to an automatic conversion upon a qualified equity financing defined as a raise of $40.0 million, excluding the conversion of the Note and other indebtedness. The conversion was equal to the outstanding principal amount of the Note plus all accrued and previously unpaid interest thereon, divided by the lowest price per share paid by investor for qualified equity financing. On January 4, 2018, the Note converted into 3,499,209 shares of Series A Convertible Preferred Stock.

Convertible Note Financing

3 Months Ended

Mar. 31, 2019

5. Convertible Note Financing

On October 2, 2017, the Company issued a convertible promissory note (the “Note”) in an amount of $6.0 million to an investor. The Note accrued interest at 8% per year and had a maturity date of October 2, 2018. The Note was subject to an automatic conversion upon a qualified equity financing defined as a raise of $40.0 million, excluding the conversion of the Note and other indebtedness. The conversion was equal to the outstanding principal amount of the Note plus all accrued and previously unpaid interest thereon, divided by the lowest price per share paid by investor for qualified equity financing. On January 4, 2018, the Note converted into 3,499,209 shares of Series A Convertible Preferred Stock.