Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.20.2
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Summary of Significant Accounting Policies [Line Items]          
Amounts due to related party $ 13   $ 13   $ 36
Professional Services          
Summary of Significant Accounting Policies [Line Items]          
Costs incurred under the arrangements $ 71 $ 93 $ 222 $ 280  
Minimum          
Summary of Significant Accounting Policies [Line Items]          
Investments maturity year     2020    
Maximum          
Summary of Significant Accounting Policies [Line Items]          
Investments maturity year     2021