Cash and Cash Equivalents and Short-Term Investments

9 Months Ended

Sep. 30, 2020

Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents and Short-Term Investments

Cash and Cash Equivalents and Short-Term Investments

The following tables summarize the amortized cost, unrealized gain and loss and estimated fair value of cash equivalents and short-term investments:

	September 30, 2020
(in thousands)	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	51,409	$	—	$	—	$	51,409
Total cash equivalents	$	51,409	$	—	$	—	$	51,409
Short-term investments:
Commercial paper	$	70,641	$	—	$	—	$	70,641
Corporate bonds	11,741		28		—		11,769
U.S. Treasury and agency obligations	45,284		26		—		45,310
Total short-term investments	$	127,666	$	54	$	—	$	127,720

	December 31, 2019
(in thousands)	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	13,588	$	—	$	—	$	13,588
Commercial paper	8,987		—		—		8,987
Total cash equivalents	$	22,575	$	—	$	—	$	22,575
Short-term investments:
Commercial paper	$	61,371	$	—	$	—	$	61,371
Corporate bonds	23,856		14		(1)		23,869
U.S. Treasury and agency obligations	52,627		38		(1)		52,664
Total short-term investments	$	137,854	$	52	$	(2)	$	137,904

At September 30, 2020, all of our short-term investments had maturities within the next twelve months.