XML 34 R24.htm IDEA: XBRL DOCUMENT v3.22.2
Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Assets:    
Total available for sale investments $ 101,041 $ 128,878
Recurring basis    
Assets:    
Total included in cash and cash equivalents 20,089 10,990
Total available for sale investments 101,041 128,878
Total assets measured at fair value on a recurring basis 121,130 139,868
Recurring basis | Certificate of deposit    
Assets:    
Total available for sale investments 12,860 1,260
Recurring basis | Corporate debt securities    
Assets:    
Total available for sale investments 63,386 88,390
Recurring basis | Commercial paper    
Assets:    
Total available for sale investments 10,135 14,454
Recurring basis | Non U.S. government    
Assets:    
Total available for sale investments   728
Recurring basis | U.S. treasury securities    
Assets:    
Total available for sale investments 14,660 24,046
Recurring basis | Money market fund    
Assets:    
Total included in cash and cash equivalents 20,089 10,990
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)    
Assets:    
Total included in cash and cash equivalents 20,089 10,990
Total available for sale investments 14,660 24,046
Total assets measured at fair value on a recurring basis 34,749 35,036
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Certificate of deposit    
Assets:    
Total available for sale investments 0 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Corporate debt securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Commercial paper    
Assets:    
Total available for sale investments 0 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Non U.S. government    
Assets:    
Total available for sale investments   0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | U.S. treasury securities    
Assets:    
Total available for sale investments 14,660 24,046
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Money market fund    
Assets:    
Total included in cash and cash equivalents 20,089 10,990
Recurring basis | Significant Other Observable Inputs (Level 2)    
Assets:    
Total included in cash and cash equivalents 0 0
Total available for sale investments 86,381 104,832
Total assets measured at fair value on a recurring basis 86,381 104,832
Recurring basis | Significant Other Observable Inputs (Level 2) | Certificate of deposit    
Assets:    
Total available for sale investments 12,860 1,260
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Assets:    
Total available for sale investments 63,386 88,390
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial paper    
Assets:    
Total available for sale investments 10,135 14,454
Recurring basis | Significant Other Observable Inputs (Level 2) | Non U.S. government    
Assets:    
Total available for sale investments   728
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. treasury securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Other Observable Inputs (Level 2) | Money market fund    
Assets:    
Total included in cash and cash equivalents 0 0
Recurring basis | Significant Unobservable Inputs (Level 3)    
Assets:    
Total included in cash and cash equivalents 0 0
Total available for sale investments 0 0
Total assets measured at fair value on a recurring basis 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Certificate of deposit    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate debt securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Commercial paper    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Non U.S. government    
Assets:    
Total available for sale investments   0
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. treasury securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Money market fund    
Assets:    
Total included in cash and cash equivalents $ 0 $ 0