v3.21.2

Cash, Cash Equivalents and Investments - Summary of Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains	$ 6	$ 15
Gross Unrealized Losses	(19)	(23)
Investments, amortized cost	99,818	131,360
Investments, fair value	99,805	131,352
Corporate bonds and commercial paper
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains	3	15
Gross Unrealized Losses	(9)	(9)
Investments, amortized cost	36,472	31,233
Investments, fair value	36,466	31,239
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Investments, amortized cost	12,161	10,007
Investments, fair value	12,161	10,007
U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains	3	0
Gross Unrealized Losses	(10)	(14)
Investments, amortized cost	51,185	90,120
Investments, fair value	51,178	90,106
Money market funds
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost	176,144	188,469
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Cash equivalents, fair value	176,144	188,469
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost	25,076	25,028
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Cash equivalents, fair value	25,076	25,028
Corporate bonds and commercial paper
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost		997
Gross Unrealized Gains		0
Gross Unrealized Losses		(1)
Cash equivalents, fair value		996
U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost		19,999
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Cash equivalents, fair value		19,999
Cash
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost	201,220	234,493
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(1)
Cash equivalents, fair value	$ 201,220	$ 234,492

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- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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