Summary of Significant Accounting Policies - Schedule of Reconciliation of Preferred Stock Warrant Liability Measured at Fair Value Using Level 3 Unobservable Inputs (Details) - Level 3 - Recurring $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2019	$ 45
Change in fair value	75
Reclassification of preferred stock warrant liability to stockholders’ equity	(120)
Balance at June 30, 2020	$ 0