Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets:
Total	$ 74,750	$ 76,199
Money Market Funds
Assets:
Money market funds included within cash and cash equivalents	74,750	76,199
(Level 1)
Assets:
Total	74,750	76,199
(Level 1) | Money Market Funds
Assets:
Money market funds included within cash and cash equivalents	74,750	76,199
(Level 2)
Assets:
Total	0	0
(Level 2) | Money Market Funds
Assets:
Money market funds included within cash and cash equivalents	0	0
(Level 3)
Assets:
Total	0	0
(Level 3) | Money Market Funds
Assets:
Money market funds included within cash and cash equivalents	$ 0	$ 0