Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis as of March 31, 2017 and December 31, 2016 were as follows:

($ in thousands)				Fair Value Measurements at Reporting Date Using
Description	Balance as of March 31, 2017			Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	63,194		$	63,194	$	—	$	—
Liabilities:
Derivative liabilities	$	(2,471	)	$	—	$	—	$	(2,471	)

($ in thousands)				Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2016			Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	77,120		$	77,120	$	—	$	—
Liabilities:
Derivative liabilities	$	(862	)	$	—	$	—	$	(862	)