Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements of Financial Instruments

The fair value measurements of the Company’s financial instruments as of September 30, 2018 are summarized in the table below: 

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at September 30, 2018
	(in thousands)
Assets:
Money market funds	$	7,003	$	—	$	—	$	7,003
Liabilities:
Embedded derivative liability	$	—	$	—	$	275	$	275

The fair value measurements of the Company’s financial instruments as of December 31, 2017 are summarized in the table below:

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2017
	(in thousands)
Assets:
Money market funds	$	20,046	$	—	$	—	$	20,046