Stock-Based Payment (Tables)

12 Months Ended

Dec. 31, 2012

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

	Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding at December 31, 2010	151,801	$53.55
Granted	207,459	$5.35
Expired	(57,626)	$63.13
Outstanding at December 31, 2011	301,634	$18.57	7.93	─
Granted	536,895	$2.90
Cancelled	(41,175)	$3.06
Expired	(11,368)	$78.97
Outstanding at December 31, 2012	785,986	$7.81	8.48	─
Exercisable at December 31, 2012	286,101	$15.98	7.25	─

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

	2012	2011
Expected volatility	84.0%	80.2%
Risk-free interest rate	1.1%	1.9%
Dividend yield	─	─
Expected life in years	5.9	5.2
Weighted average grant date fair value	$2.04	$3.49

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

	Shares		Weighted Average Grant Date Fair Value	Aggregate Intrinsic Value
Non-vested share units at December 31, 2010	─	0	─	─
Granted	141,061		$5.85	─
Vested	(115,823)		$5.90	─
Non-vested share units at December 31, 2011	25,238		$5.64	─
Granted	172,147		$2.91	─
Vested	(12,508)		$5.50	─
Forfeited	(17,712)		$3.35	─
Non-vested share units at December 31, 2012	167,165		$3.08	─