Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Company's Financial Assets and Liabilities

The following table presents the fair value of the Company’s financial assets and liabilities determined using the inputs defined above (amounts in thousands).

	March 31, 2019
	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	23,613	$               —		$               —		$	23,613
U.S. government securities	—			3,477	—			3,477
Corporate notes	—			11,286	—			11,286
Commercial paper	—			15,744	—			15,744
Total	$	23,613	$	30,507	$	—	$	54,120

	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	10,606	$	—	$	—	$	10,606
U.S. government securities		—		9,975		—		9,975
Corporate notes		—		16,499		—		16,499
Commercial paper		—		36,331		—		36,331
Total	$	10,606	$	62,805	$	—	$	73,411