Stockholders’ Equity - Warrants (Details) - USD ($)			1 Months Ended
	Aug. 05, 2019	Jul. 06, 2018	Jun. 30, 2015	Dec. 31, 2010
2019 Credit Facility
Warrants
Amount bank could receive if takes the option to put the warrants upon expiration or a liquidity event	$ 50,000
Warrants to Purchase Series A Redeemable Convertible Preferred Stock | SVB Credit Facility
Warrants
Number of shares the warrant can be converted to				9,229
Warrant exercise price				$ 26.00
Warrants to Purchase Series B Redeemable Convertible Preferred Stock | 2015 Credit Facility
Warrants
Number of shares the warrant can be converted to			18,461
Warrant exercise price			$ 26.00
Warrant exercise expiration period			10 years
Warrants to Purchase Series B Redeemable Convertible Preferred Stock | SVB Credit Facility
Warrants
Number of shares the warrant can be converted to		9,375
Warrant exercise price		$ 8.91
Fair Value Of Warrants		$ 43,000
Warrant exercise expiration period		5 years