Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Components of Marketable Securities (Details)

v3.21.1
Summary of Significant Accounting Policies - Summary of Components of Marketable Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Amortized Cost $ 1,650 $ 928
Unrealized Losses (11) (2)
Fair Value 1,639 926
U.S. Government Obligations [Member]    
Amortized Cost 1,021 125
Unrealized Losses (7)
Fair Value 1,014 125
Corporate Obligations [Member]    
Amortized Cost 629 803
Unrealized Losses (4) (2)
Fair Value $ 625 $ 801