Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Schedule of fair value of assets measured at fair value on a recurring basis, by level of fair value hierarchy

	March 31, 2020
	Fair Value Measured Using						Total
	(Level 1)		(Level 2)		(Level 3)		Balance
Assets
Cash equivalents	$	22,366	$	—	$	—	$	22,366
Marketable securities		2,016		43,193		—		45,209
	$	24,382	$	43,193	$	—	$	67,575

	December 31, 2019
	Fair Value Measured Using						Total
	(Level 1)		(Level 2)		(Level 3)		Balance
Assets
Cash equivalents	$	4,252	$	—	$	—	$	4,252
Marketable securities		7,023		65,805		—		72,828
	$	11,275	$	65,805	$	—	$	77,080

Schedule of fair value of available for sale marketable securities

	March 31, 2020
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities	$	2,005	$	11	$	—	$	2,016
U.S. Government agency securities		9,851		50		—		9,901
Corporate debt obligations		33,310		12		(30)		33,292
	$	45,166	$	73	$	(30)	$	45,209

	December 31, 2019
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities	$	7,019	$	4	$	—	$	7,023
U.S. Government agency securities		17,701		16		—		17,717
Corporate debt obligations		48,079		17		(8)		48,088
	$	72,799	$	37	$	(8)	$	72,828