Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Summary of Financial Assets Recognized at Fair Value on Recurring Basis

As of December 31, 2019 and 2018, the Company’s financial assets recognized at fair value on a recurring basis consisted of the following:

	Fair Value as of December 31, 2019
	Total		Level 1		Level 2		Level 3
	(In thousands)
Cash equivalents	$	46,917	$	46,917	$	-	$	-
Marketable securities:
U.S. Treasury securities		159,502		159,502		-		-
Financial institution debt securities		40,278		-		40,278		-
Corporate debt securities		18,967		-		18,967		-
Other asset-backed securities		8,499		-		8,499		-
Total marketable securities		227,246		159,502		67,744		-
Total	$	274,163	$	206,419	$	67,744	$	-
	Fair Value as of December 31, 2018
	Total		Level 1		Level 2		Level 3
	(In thousands)
Cash equivalents	$	45,986	$	45,986	$	-	$	-
Marketable securities:
U.S. Treasury securities		165,948		165,948		-		-
Financial institution debt securities		65,420		-		65,420		-
Corporate debt securities		23,835		-		23,835		-
Total marketable securities		255,203		165,948		89,255		-
Total	$	301,189	$	211,934	$	89,255	$	-