Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details)

v3.20.1
Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - Money Market Funds [Member] - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Summary of financial instruments measured at fair value on a recurring basis    
Money market funds $ 68,460 $ 71,248
Fair Value, Inputs, Level 1 [Member]    
Summary of financial instruments measured at fair value on a recurring basis    
Money market funds $ 68,460 $ 71,248