Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurements

Financial assets measured at fair value on a recurring basis are summarized as follows, in thousands:

Description	At September 30, 2016		Quoted Prices in Active Markets (Level 1)		Other Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Restricted cash	$	50	$	—	$	50	$	—
Short-term investments		2,000		—		2,000		—
Thera Warrant		5		—		—		5
Total	$	2,055	$	—	$	2,050	$	5
Description	At December 31, 2015		Quoted Prices in Active Markets (Level 1)		Other Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Restricted cash	$	50	$	—	$	50	$	—
Cash equivalents		2,500		—		2,500		—
Short-term investments		5,500		—		5,500		—
Total	$	8,050	$	—	$	8,050	$	—

Schedule of Additional Information about Assets Measured at Fair Value on a Recurring Basis

The following table presents additional information about assets measured at fair value on a recurring basis and for which the Company utilizes Level 3 inputs to determine fair value, in thousands:

	Nine Months Ended September 30, 2016
Balance, beginning of period	$	—
Fair value of Thera Warrant		5
Balance, end of period	$	5