Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Financial Instruments Owned At Fair Value [Abstract]

Summary of Cash Equivalents and Investments

Cash equivalents and investments consisted of the following:

	March 31, 2021							December 31, 2020
(In thousands)	Amortized Cost		Unrealized Gains (Losses), net			Fair Value		Amortized Cost		Unrealized Losses, net			Fair Value
Cash equivalents:
Money market funds	$	118,485	$	—		$	118,485	$	112,907	$	—		$	112,907
Certificates of deposit		7,618		—			7,618		7,708		—			7,708
Marketable securities:
Corporate bonds		7,564		(40	)		7,524		5,069		(29	)		5,040
Commercial paper		2,493		7			2,500		7,569		(55	)		7,514
U.S. treasury securities		24,094		(62	)		24,032		20,051		(27	)		20,024
	$	160,254	$	(95	)	$	160,159	$	153,304	$	(111	)	$	153,193
Maturing within one year						$	157,659						$	150,693
Maturing within one to two years							2,500							2,500
Total						$	160,159						$	153,193

Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents information about our financial assets and liabilities that are measured at fair value on a recurring basis and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value:

	March 31, 2021								December 31, 2020
(In thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	118,485	$	—	$	—	$	118,485	$	112,907	$	—	$	—	$	112,907
Certificates of deposit		7,618		—		—		7,618		7,708		—		—		7,708
Marketable securities:
Corporate bonds		—		7,524		—		7,524		—		5,040		—		5,040
Commercial paper		—		2,500		—		2,500		—		7,514		—		7,514
U.S. treasury securities		—		24,032		—		24,032		—		20,024		—		20,024
	$	126,103	$	34,056	$	—	$	160,159	$	120,615	$	32,578	$	—	$	153,193
Liabilities:
Contingent consideration	$	—	$	—	$	1,878	$	1,878	$	—	$	—	$	1,878	$	1,878
	$	—	$	—	$	1,878	$	1,878	$	—	$	—	$	1,878	$	1,878