Investments

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

The following table summarizes the Company’s cash equivalents, restricted cash, and short-term investments (in thousands):

	September 30, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash equivalents and restricted cash:
Money market funds	$	130,766	$	—	$	—	$	130,766
Total	$	130,766	$	—	$	—	$	130,766

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	281,783	$	—	$	—	$	281,783
Total	$	281,783	$	—	$	—	$	281,783

During the three and nine months ended September 30, 2021, other income, net in the statements of operations includes interest income on investments of less than $0.1 million and less than $0.1 million, respectively.

During the three and nine months ended September 30, 2020, other income, net in the statements of operations includes interest income on investments of less than $0.1 million and $0.5 million, respectively.

There were no unrealized gains or losses on investments reclassified from accumulated other comprehensive income (loss) to other income in the statements of operations during the three and nine months ended September 30, 2021 and 2020.

In the three and nine months ended September 30, 2021, there were no allowances for credit losses and all unrealized gains (losses) for available-for-sale securities were recognized in accumulated other comprehensive income (loss). As of September 30, 2021, the Company had no accrued interest receivables.