Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

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

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The Company used the Black-Scholes option-pricing model with the following weighted-average assumptions to value options granted in 2013 and 2012: 

	2013		2012
Dividend yield	—	%	—	%
Expected volatility	77.2	%	85.0	%
Risk-free interest rate	1.1	%	1.4	%
Expected option lives	6.0 years		6.0 years

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table presents the activity related to stock options for the six months ended June 30, 2013 and 2012:

	Options		Weighted- average exercise price		Weighted- average remaining contractual term (years)	Aggregate intrinsic value (000)
Options outstanding at January 1, 2013	139,446		$	53.39	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
Options outstanding at January 1, 2012	144,370		$	68.90	5.9	$	—
Granted	19,412		4.25		1.9	27.8
Canceled / forfeited	(17,699	)	69.11		N/A	N/A
Expired	(8,110	)	68.97		N/A	N/A
Options outstanding at June 30, 2012	137,973		$	59.77	6.3	$	27.8
Options exercisable at June 30, 2012	56,711		$	137.74	3.6	$	—

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

The following table presents the activity related to nonvested restricted stock for the six months endedJune 30, 2013:

	Number of shares		Weighted- average grant date fair value per share
Nonvested as of January 1, 2013	157,191		$	14.11
Granted	292,561		5.81
Vested	(80,902	)	5.98
Canceled / forfeited	(4,167	)	7.12
Nonvested as of June 30, 2013	364,683		$	9.34