XML 58 R47.htm IDEA: XBRL DOCUMENT v3.22.2.2
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale $ 1,809,568 $ 1,533,668
Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 1,809,568 1,533,668
Total financial assets carried at fair value 1,986,717 1,719,255
Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 0 0
Total financial assets carried at fair value 62,968 66,531
Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 1,809,568 1,533,668
Total financial assets carried at fair value 1,923,749 1,652,724
Commercial paper    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 873,856 945,841
Commercial paper | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 873,856 945,841
Commercial paper | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 0 0
Commercial paper | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 873,856 945,841
Corporate bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 618,122 540,978
Corporate bonds | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 618,122 540,978
Corporate bonds | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 0 0
Corporate bonds | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 618,122 540,978
U.S. Treasury and government-sponsored enterprises    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 301,337 33,945
U.S. Treasury and government-sponsored enterprises | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 301,337 33,945
U.S. Treasury and government-sponsored enterprises | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 0 0
U.S. Treasury and government-sponsored enterprises | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 301,337 33,945
Municipal bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 16,253 12,904
Municipal bonds | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 16,253 12,904
Municipal bonds | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 0 0
Municipal bonds | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total debt securities available-for-sale 16,253 12,904
Money market funds | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 62,968 66,531
Money market funds | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 62,968 66,531
Money market funds | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0 0
Certificates of deposit | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 114,181 119,056
Certificates of deposit | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0 0
Certificates of deposit | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents $ 114,181 $ 119,056