Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on a Recurring Basis

The following table presents our assets and liabilities measured at fair value on a recurring basis using the above input categories (in thousands):

	As of September 30, 2020								As of December 31, 2019
Description	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market funds	$	29,481	$	—	$	—	$	29,481	$	24,246	$	—	$	—	$	24,246
Total cash equivalents	29,481		—		—		29,481		24,246		—		—		24,246
Short-term investments:
Certificates of deposit	—		3,254		—		3,254		—		5,145		—		5,145
Commercial paper	—		19,982		—		19,982		—		—		—		—
Corporate notes and bonds	—		447,977		—		447,977		—		472,908		—		472,908
U.S. Treasuries	—		71,092		—		71,092		—		48,069		—		48,069
U.S. Government agencies	—		85,587		—		85,587		—		178,833		—		178,833
Total short-term investments	—		627,892		—		627,892		—		704,955		—		704,955
Total assets measured at fair value	$	29,481	$	627,892	$	—	$	657,373	$	24,246	$	704,955	$	—	$	729,201