Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Measurements

Summary of major categories of financial assets and financial liabilities measured at fair value on a recurring basis

The following fair value hierarchy table presents information about each major category of our financial assets and liabilities measured at fair value on a recurring basis (in thousands):

	Level 1		Level 2		Level 3		Total
September 30, 2017
Assets
Money market funds (cash equivalents)	$	37,171	$	—	$	—	$	37,171
Certificates of deposit		496		—		—		496
U.S. Treasury securities		—		24,877		—		24,877
Total assets	$	37,667	$	24,877	$	—	$	62,544
December 31, 2016
Assets
Money market funds (cash equivalents)	$	25,629	$	—	$	—	$	25,629
Certificates of deposit		3,922		—		—		3,922
Total assets	$	29,551	$	—	$	—	$	29,551