Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Summary of Assets that Require Fair Value Measurements on Recurring Basis and Their Respective Input Levels Based on Fair Value Hierarchy

The following tables summarize the Company’s assets that require fair value measurements on a recurring basis and their respective input levels based on the fair value hierarchy (in thousands):

			Fair Value Measurements Using
			Quoted Prices in		Significant		Significant
			Active Markets		Other		Unobservable
	June 30,		for Identical		Observable		Inputs
	2022		Assets (Level 1)		Inputs (Level 2)		(Level 3)
Short-term investments:
U.S. treasury securities	$	32,779	$	32,779	$	-	$	-
Certificates of deposit		975		975		-		-
Total	$	33,754	$	33,754	$	-	$	-

			Fair Value Measurements Using
			Quoted Prices in		Significant		Significant
			Active Markets		Other		Unobservable
	December 31,		for Identical		Observable		Inputs
	2021		Assets (Level 1)		Inputs (Level 2)		(Level 3)
Short-term investments:
U.S. treasury securities	$	29,121	$	29,121	$	-	$	-
Certificates of deposit		1,224		1,224		-		-
Total	$	30,345	$	30,345	$	-	$	-