Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

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 March 31, 2018 and December 31, 2017:

	March 31, 2018
($ in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents, money market funds with less than 90 days maturity	$	10,708	$	—	$	—	$	10,708
Total Assets	$	10,708	$	—	$	—	$	10,708
Liabilities:
Warrant liability	$	—	$	—	$	838	$	838
Derivative liability	—		—		3,199		3,199
Total Liabilities	$	—	$	—	$	4,037	$	4,037

	December 31, 2017
($ in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents, money market funds with less than 90 days maturity	$	14,670	$	—	$	—	$	14,670
Total Assets	$	14,670	$	—	$	—	$	14,670
Liabilities:
Warrant liability	$	—	$	—	$	1,073	$	1,073
Derivative liability	—		—		3,136		3,136
Total Liabilities	$	—	$	—	$	4,209	$	4,209

Reconciliation of Liabilities Measured at Fair Value on Recurring Basis

The reconciliation of the Company’s 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, 2017	$	1,073
Change in fair value of warrant liability	(235		)
Balance at March 31, 2018	$	838

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

	Derivative
($ in thousands)	Liability
Balance at December 31, 2017	$	3,136
Change in fair value of derivative liability	63
Balance at March 31, 2018	$	3,199