Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Company's Financial Assets and Liability Measured at Fair Value on a Recurring Basis

The following fair value hierarchy table presents information about each major category of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of:

	June 30, 2016
($ in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	8,161	$	—	$	—	$	8,161
Liabilities:
Warrant liability	$	—	$	—	$	764	$	764

	December 31, 2015
($ in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	29,268	$	—	$	—	$	29,268
Liabilities:
Warrant liability	$	—	$	—	$	8,275	$	8,275

Reconciliation of Warrant Liability Measured at Fair Value on Recurring Basis

The reconciliation of the warrant liability measured at fair value on a recurring basis using unobservable inputs (Level 3) was as follows:

	Warrant
($ in thousands)	Liability
Balance at December 31, 2015	$	8,275
Expiration of warrants (1)	(62		)
Change in fair value of warrant liability	(7,449		)
Balance at June 30, 2016	$	764

(1) Represents the fair value as of the beginning of the year for warrants expiring during the year and has been recorded to warrant revaluation income or expense in the Condensed Consolidated Statement of Operations for the six months ended June 30, 2016.