Income Taxes - Summary of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carryforward	$ 7,212	$ 2,268
Credits	1,227	334
Intangibles	129	185
Other	409	224
Total deferred tax assets	8,977	3,011
Valuation allowance	(8,976)	(3,011)
Total deferred tax assets, net of allowance	1
Deferred tax liabilities:
Other	(1)
Total deferred tax liabilities	(1)
Net deferred taxes	$ 0	$ 0