Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Summary of Financial Instruments Measured on a Recurring Basis

The following table summarizes the conclusions reached as of June 30, 2017 and December 31, 2016 for financial instruments measured at fair value on a recurring basis (dollars in thousands):

			Fair Value Hierarchy Classification
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
December 31, 2016
Cash on deposit	$	9,767	$	9,767	—	—
Money market funds	25,889		25,889		—	—
Total assets	$	35,656	$	35,656	—	—
Warrant liability	$	6,601	—		—	$	6,601
Total liabilities	$	6,601	—		—	$	6,601
June 30, 2017
Cash on deposit	$	894	$	894	—	—
Money market funds	6,556		6,556		—	—
Total assets	$	7,450	$	7,450	—	—
Warrant liability	$	2,154	—		—	$	2,154
Total liabilities	$	2,154	—		—	$	2,154

Reconciliation of liabilities using level 3 inputs

A reconciliation of the beginning and ending balances for liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) is as follows (dollars in thousands):

Balance - January 1, 2017	$	6,601
Gain adjustment to fair value	(4,447		)
Balance - June 30, 2017	$	2,154