Quarterly report pursuant to Section 13 or 15(d)

Cash, Cash Equivalents, Restricted Cash and Short-Term Investments - Narrative (Details)

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Cash, Cash Equivalents, Restricted Cash and Short-Term Investments - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]      
Short-term investments $ 240,104 $ 240,104 $ 234,178
Total cash, cash equivalents, restricted cash and short-term investments 391,736 391,736 466,078
Total held to maturity securities at amortized cost 3,362 3,362 19,228
Available-for-sale debt securities 388,400 388,400 446,900
Interest receivable 900 900 $ 100
Unrealized gains on available-for-sale securities $ 235 $ 1,000