Stockholders' Equity - Warrants (Details) - USD ($)	Aug. 05, 2019	Jul. 06, 2018	Jul. 15, 2020	Jun. 30, 2015	Dec. 31, 2010
2019 Credit Facility
Warrants
Number of shares the warrant can be converted to			21,500
Warrant exercise price			$ 0.01
Fair Value Of Warrants			$ 152,000
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
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