Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2022

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 March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash and cash equivalents:
Money market funds	$	558	$	—	$	—	$	558
Corporate notes and bonds	—		152		—		152
Total cash and cash equivalents	558		152		—		710
Equity investments:
Mutual funds	845		—		—		845
Total equity investments	845		—		—		845
Debt securities available-for-sale:
Certificates of deposit	—		5,164		—		5,164
U.S. Treasury securities	15,728		—		—		15,728
Commercial paper	—		6,197		—		6,197
Corporate notes and bonds	—		8,788		—		8,788
Debt securities available-for-sale	15,728		20,149		—		35,877
Total assets measured at fair value	$	17,131	$	20,301	$	—	$	37,432

	December 31, 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 and cash equivalents:
Money market funds	$	5,563	$	—	$	—	$	5,563
Commercial paper	—		200		—		200
Total cash and cash equivalents	5,563		200		—		5,763
Equity investments:
Mutual funds	841		—		—		841
Total equity investments	841		—		—		841
Debt securities available-for-sale:
Certificates of deposit	—		1,351		—		1,351
U.S. Treasury securities	250		—		—		250
Commercial paper	—		8,046		—		8,046
Corporate notes and bonds	—		13,232		—		13,232
Debt securities available-for-sale	250		22,629		—		22,879
Total assets measured at fair value	$	6,654	$	22,829	$	—	$	29,483