Fair Value Measurements

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

5.  FAIR VALUE MEASUREMENTS

The Company accounts for certain financial assets at fair value, defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions market participants would use in pricing an asset or liability. A three-level hierarchy is used to show the extent and level of judgment used to estimate fair value measurements.

Assets and liabilities measured at fair value on a recurring basis included the following as of December 31, 2021 (in thousands):

	Using
	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value as of December 31, 2021
Cash equivalents:
Money market funds	$	94,282	$	—	$	—	$	94,282
Short-term investments:
U.S. Treasury Obligations		45,215		—		—		45,215
Long-term investments:
Failed Auction Security		—		—		2,639		2,639

Assets measured at fair value on a recurring basis included the following as of December 31, 2020 (in thousands):

	Using
	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value as of December 31, 2020
Cash equivalents:
Money market funds	$	69,493	$	—	$	—		$	69,493
U.S. Treasury Obligations		19,998		—		—			19,998
Short-term investments:
U.S. Treasury Obligations		50,166		—		—			50,166
Long-term investments:
Failed Auction Security		—		—		2,517			2,517
Liabilities:
Contingent consideration obligations		—		—		(227	)		(227	)

The change in the estimated fair value calculated for the investment valued on a recurring basis utilizing Level 3 inputs (i.e., the Failed Auction Security) for the year ended December 31, 2021 was as follows (in thousands):

Balance at the beginning of the period	$	2,517
Credit gain on available-for-sale security included in Other income (expense), net		4
Gain included in Other comprehensive income		118
Balance at the end of the period	$	2,639

Management utilized a probability weighted discounted cash flow model to determine the estimated fair value of this investment as of December 31, 2021.