Fair Value of Financial Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value of Financial Assets and Liabilities

Schedule of assets and liabilities measured at fair value on a recurring basis

	June 30, 2019
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	20,226	$	—	$	—	$	20,226
Marketable securities		—		83,863		—		83,863
Total assets	$	20,226	$	83,863	$	—	$	104,089
Liabilities:
Acquisition-related contingent consideration	$	—	$	—	$	1,668	$	1,668
Total liabilities	$	—	$	—	$	1,668	$	1,668

	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	49,766	$	4,992	$	—	$	54,758
Marketable securities		—		110,953		—		110,953
Total assets	$	49,766	$	115,945	$	—	$	165,711
Liabilities:
Acquisition-related contingent consideration	$	—	$	—	$	934	$	934
Total liabilities	$	—	$	—	$	934	$	934

Schedule of the fair value of available for sale marketable securities

	June 30, 2019
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gain		Loss		Value
Marketable securities:
Corporate debt securities	$	16,872	$	20	$	—	$	16,892
Commercial paper		25,834		—		—		25,834
Asset-backed securities		18,646		9		—		18,655
U.S. government agency debt securities		22,472		10		—		22,482
Total marketable securities	$	83,824	$	39	$	—	$	83,863

	December 31, 2018
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gain		Loss		Value
Marketable securities:
Corporate debt securities	$	5,030	$	—	$	(14)	$	5,016
Commercial paper		67,159		—		—		67,159
Asset-backed securities		21,745		—		(8)		21,737
U.S. government agency debt securities		17,044		—		(3)		17,041
Total marketable securities	$	110,978	$	—	$	(25)	$	110,953