Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurement

The following tables represent the financial instruments measured at fair value on a recurring basis in the financial statements of the Company and the valuation approach applied to each class of financial instruments at September 30, 2021 and December 31, 2020 (in thousands):

	September 30, 2021
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash equivalents:
Money market funds	$	5,563	$	—	$	—	$	5,563
Corporate notes and bonds	—		561		—		561
Total cash equivalents	5,563		561		—		6,124
Equity investments:
Mutual funds	700		—		—		700
Total equity investments	700		—		—		700
Debt securities available-for-sale:
Certificates of deposit	—		1,567		—		1,567
Commercial paper	—		8,269		—		8,269
Corporate notes and bonds	—		10,763		—		10,763
Total debt securities available-for-sale	—		20,599		—		20,599
Total assets measured at fair value	$	6,263	$	21,160	$	—	$	27,423

	December 31, 2020
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash equivalents:
Money market funds	$	19,276	$	—	$	—	$	19,276
Commercial paper	—		885		—		885
Total cash equivalents	19,276		885		—		20,161
Equity investments:
Mutual funds	357		—		—		357
Total equity investments	357		—		—		357
Debt securities available-for-sale:
Certificates of deposit	—		5,825		—		5,825
U.S. Treasury securities	5,923		—		—		5,923
Commercial paper	—		10,604		—		10,604
Corporate notes and bonds	—		9,779		—		9,779
Total debt securities available-for-sale	5,923		26,208		—		32,131
Total assets measured at fair value	$	25,556	$	27,093	$	—	$	52,649