Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock-Based Compensation Expense

Total stock-based compensation expense recognized using the straight-line attribution method in the consolidated statement of operations for the years ended December 31 is as follows:

($ in thousands)	2014		2013		2012
Stock option compensation expense for employees and directors	$	1,236	$	1,045	$	1,200
Equity awards for nonemployees issued for services	3		105		24
Total stock-based compensation expense	$	1,239	$	1,150	$	1,224

Details of Fair Value Option Award

The fair market value of the stock options at the date of grant was estimated using the Black-Scholes option-pricing model with the following weighted average assumptions for the years ended December 31:

	2014		2013		2012
Expected life	5 years, 11 months		5 years, 7 months		5 years, 8 months
Interest rate	1.9	%	1.6	%	1.6	%
Dividend yield	—		—		—
Volatility	70	%	71	%	64	%

Summary of Stock Option Activity

	Number of shares		Weighted- average  exercise  price		Weighted- average  remaining  contractual term  (in years)	Aggregate  intrinsic  value
Outstanding at December 31, 2011	544,340		$	19.25	7 years, 6 months	$	—
Granted	38,000		$	8.02
Forfeited	(20,315	)	$	15.48
Outstanding at December 31, 2012	562,025		$	18.56	7 years	$	—
Granted	1,532,000		$	4.15
Forfeited	(25,305	)	$	14.71
Outstanding at December 31, 2013	2,068,720		$	7.93	8 years, 5 months	$	544
Granted	348,000		$	4.19
Expired	(51,637	)	$	21.61
Forfeited	(278,633	)	$	4.45
Outstanding at December 31, 2014	2,086,450		$	7.43	7 years, 2 months	$	—
Exercisable at December 31, 2014	1,100,250		$	10.63	7 years, 2 months	$	—