Redeemable Convertible Preferred Stock Warrants	9 Months Ended
Sep. 30, 2020
Convertible Preferred Stock Warrants [Abstract]
Redeemable Convertible Preferred Stock Warrants	Note 10. Redeemable Convertible Preferred Stock Warrants In September 2014, in connection with a loan, the Company issued a warrant to purchase 22,489 shares of its Series B redeemable convertible preferred stock at an exercise price of $4.60 per share. In June 2017, as additional consideration for the Revolving Loan (see Note 6), the Company issued a warrant to purchase up to 62,096 shares of its Series C redeemable convertible preferred stock at an exercise price of $8.052. The estimated fair value of the Series C convertible preferred stock warrant on the date of issuance of $0.1 million was recorded as a debt reduction. As of the issuance date, the fair value of the Series C convertible preferred stock warrant was calculated using the Black-Scholes option-pricing model and was based on a contractual term of seven years, a risk-free interest rate of 1.97%, expected volatility of 64.33%, and 0% expected dividend yield. At initial recognition, the convertible preferred stock warrants were recorded at their estimated fair values and were subject to remeasurement at each consolidated balance sheet date, with changes in fair value recognized as a component of net income. As of December 31, 2018, the fair values of the convertible preferred stock warrants were calculated to be $0.7 million. Immediately prior to the closing of the Company’s IPO, the redeemable convertible preferred stock warrants automatically converted to common stock warrants. As a result of the automatic conversion of the redeemable convertible preferred stock warrants to common stock warrants, the Company revalued the redeemable convertible preferred stock warrants as of the completion of the IPO and reclassified the outstanding preferred stock warrant liability balance to additional paid-in capital with no further remeasurements as the common stock warrants are now deemed permanent equity. The fair value transferred to additional paid-in capital was $2.1 million. Subsequent to the conversion to a common stock warrant and before the end of the Company’s second quarter ended June 30, 2019, the warrant for 22,489 shares was exercised. As a result, the Company issued 19,069 shares of common stock as the warrant allowed for a net share settlement. Separately, the warrant for 62,096 shares issued in June 2017 was exercised during the Company’s third quarter ended September 30, 2020. As a result, the Company issued 40,357 shares of common stock as the warrant allowed for a net share settlement.

Redeemable Convertible Preferred Stock Warrants

9 Months Ended

Sep. 30, 2020

Convertible Preferred Stock Warrants [Abstract]

Redeemable Convertible Preferred Stock Warrants

Note 10. Redeemable Convertible Preferred Stock Warrants

In September 2014, in connection with a loan, the Company issued a warrant to purchase 22,489 shares of its Series B redeemable convertible preferred stock at an exercise price of $4.60 per share.

In June 2017, as additional consideration for the Revolving Loan (see Note 6), the Company issued a warrant to purchase up to 62,096 shares of its Series C redeemable convertible preferred stock at an exercise price of $8.052.

The estimated fair value of the Series C convertible preferred stock warrant on the date of issuance of $0.1 million was recorded as a debt reduction. As of the issuance date, the fair value of the Series C convertible preferred stock warrant was calculated using the Black-Scholes option-pricing model and was based on a contractual term of seven years, a risk-free interest rate of 1.97%, expected volatility of 64.33%, and 0% expected dividend yield.

At initial recognition, the convertible preferred stock warrants were recorded at their estimated fair values and were subject to remeasurement at each consolidated balance sheet date, with changes in fair value recognized as a component of net income. As of December 31, 2018, the fair values of the convertible preferred stock warrants were calculated to be $0.7 million.

Immediately prior to the closing of the Company’s IPO, the redeemable convertible preferred stock warrants automatically converted to common stock warrants. As a result of the automatic conversion of the redeemable convertible preferred stock warrants to common stock warrants, the Company revalued the redeemable convertible preferred stock warrants as of the completion of the IPO and reclassified the outstanding preferred stock warrant liability balance to additional paid-in capital with no further remeasurements as the common stock warrants are now deemed permanent equity. The fair value transferred to additional paid-in capital was $2.1 million.

Subsequent to the conversion to a common stock warrant and before the end of the Company’s second quarter ended June 30, 2019, the warrant for 22,489 shares was exercised. As a result, the Company issued 19,069 shares of common stock as the warrant allowed for a net share settlement. Separately, the warrant for 62,096 shares issued in June 2017 was exercised during the Company’s third quarter ended September 30, 2020. As a result, the Company issued 40,357 shares of common stock as the warrant allowed for a net share settlement.