Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Fair Value of Financial Assets and Liabilities

The following tables present information about the fair value of the Company’s financial assets and liabilities as of March 31, 2022 and December 31, 2021 and indicate the level of the fair value hierarchy utilized to determine such fair values:

	Fair Value Measurements as of March 31, 2022 Using:
	Level 1		Level 2		Level 3		Total
Assets:
Certificates of deposit—restricted cash	$	—	$	1,001	$	—	$	1,001
Money market mutual funds		135,084		—		—		135,084
	$	135,084	$	1,001	$	—	$	136,085
Liabilities:
Stock Appreciation Rights ("SARs")	$	—	$	—	$	255	$	255
	$	—	$	—	$	255	$	255

	Fair Value Measurements as of December 31, 2021 Using:
	Level 1		Level 2		Level 3		Total
Assets:
Certificates of deposit—restricted cash	$	—	$	1,001	$	—	$	1,001
Money market mutual funds		93,792		—		—		93,792
Foreign currency forward contract	$	—		5		—		5
	$	93,792	$	1,006	$	—	$	94,798
Liabilities:
SARs	$	—	$	—	$	358	$	358
	$	—	$	—	$	358	$	358

Summary of Changes in Fair Values of Stock Appreciation Rights (SARs) Liability

The following table provides a summary of changes in the fair values of the Company’s SARs liability, for which fair value is determined by Level 3 inputs:

	Three Months Ended March 31,
	2022			2021
Fair value at beginning of period	$	358		$	493
Change in fair value		(103	)		347
Exercises		—			(135	)
Fair value at end of period	$	255		$	705