Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables sets forth the fair value of the Company’s financial assets and liabilities at fair value on a recurring basis based on the three-tier fair value hierarchy (in thousands):

	June 30, 2017
	Level 1		Level 2		Level 3		Total
Financial Assets
Money market funds	$	5,497	$	—	$	—	$	5,497
Reverse repurchase agreements		—		7,250		—		7,250
US government and agency securities		—		36,459		—		36,459
Total financial assets	$	5,497	$	43,709	$	—	$	49,206

	December 31, 2016
	Level 1		Level 2		Level 3		Total
Financial Assets
Money market funds	$	4,584	$	—	$	—	$	4,584
Reverse repurchase agreements		—		39,250		—		39,250
US government and agency securities		—		15,754		—		15,754
Total financial assets	$	4,584	$	55,004	$	—	$	59,588