Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Measurements [Abstract]

Fair value measurements by level for assets and liabilities measured at fair value on a recurring basis

The following table summarizes fair value measurements by level at September 30, 2016 for assets and liabilities measured at fair value on a recurring basis:

(In thousands)	Level I		Level II		Level III			Total
Cash equivalents	$	56,972	$	—	$	—		$	56,972
Warrant liability		—		—		(6,686	)		(6,686	)

The following table summarizes fair value measurements by level at December 31, 2015 for assets and liabilities measured at fair value on a recurring basis:

(In thousands)	Level I		Level II		Level III			Total
Cash equivalents	$	20,673	$	—	$	—		$	20,673
Short-term investments		35,035		—		—			35,035
Warrant liability		—		—		(693	)		(693	)