Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2014

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

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The Company used the Black-Scholes option-pricing model with the following weighted-average assumptions to value options granted in 2013: 

	2013
Dividend yield	—	%
Expected volatility	77.2	%
Risk-free interest rate	1.1	%
Expected option lives	6.0 years

Schedule of Share-based Compensation, Stock Options, Activity

The following table presents the activity related to stock options for the six months ended June 30, 2014 and 2013:

	Options		Weighted- average exercise price		Weighted- average remaining contractual term (years)	Aggregate intrinsic value (000)
Options outstanding at January 1, 2014	111,571		$	38.92	6.2	$	—
Canceled / forfeited	(2,227	)	70.21		N/A	N/A
Expired	(4,569	)	129.60		N/A	N/A
Options outstanding at June 30, 2014	104,775		$	34.30	6.0	$	—
Options exercisable at June 30, 2014	86,281		$	40.38	5.5	$	—
Options outstanding at January 1, 2013	139,446		$	53.66	6.2	$	79.4
Granted	5,507		6.80		9.7	—
Canceled / forfeited	(8,090	)	110.67		N/A	N/A
Expired	(10,806	)	90.72		N/A	N/A
Options outstanding at June 30, 2013	126,057		$	44.78	6.5	$	40.9
Options exercisable at June 30, 2013	88,151		$	61.43	5.4	$	27.3

Schedule of Nonvested Restricted Stock Units Activity

The following table presents the activity related to nonvested restricted stock for the six months endedJune 30, 2014:

	Number of shares		Weighted- average grant date fair value per share
Nonvested as of January 1, 2014	354,270		$	9.41
Granted	434,094		4.80
Vested	(153,762	)	5.97
Canceled / forfeited	(5,663	)	5.83
Nonvested as of June 30, 2014	628,939		$	7.10