Quarterly report pursuant to Section 13 or 15(d)

Short-term Investments - Schedule of Available for Sale Short-term Investments by Major Security Type (Details)

v3.21.2
Short-term Investments - Schedule of Available for Sale Short-term Investments by Major Security Type (Details)
$ in Thousands
Sep. 30, 2021
USD ($)
Schedule Of Available For Sale Securities [Line Items]  
Cost Total $ 50,082
Unrealized gains 21
Unrealized (losses) (374)
Fair Value Total 49,729
Maturity by period Less than 1 year 31,712
Maturity by period 1 to 5 years 18,017
Commercial Paper  
Schedule Of Available For Sale Securities [Line Items]  
Cost Total 33,097
Unrealized gains 16
Unrealized (losses) (364)
Fair Value Total 32,749
Maturity by period Less than 1 year 31,712
Maturity by period 1 to 5 years 1,037
U.S. Treasury Bills  
Schedule Of Available For Sale Securities [Line Items]  
Cost Total 16,985
Unrealized gains 5
Unrealized (losses) (10)
Fair Value Total 16,980
Maturity by period 1 to 5 years $ 16,980