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Share-Based Compensation - (Tables)
6 Months Ended
Jun. 30, 2012
Share-based Compensation [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Six Months Ended
 
June 30,

2012

2011
Expected life (years)
5.0



Expected volatility
86.1
%

%
Expected dividend yield
%

%
Risk-free interest rate
0.8
%

%
Weighted average fair value per option
$
5.77


$

Summary of restricted stock unit activity [Table Text Block]
A summary of the Company’s nonvested restricted stock unit activity with respect to the six month period ended June 30, 2012 is as follows:


Number of Shares

Weighted Average Grant Date Fair Value
Nonvested at December 31, 2011

1,465


$
8.01

Granted

343


$
9.99

Vested

(403
)

$
8.43

Forfeited

(15
)

$
8.17

Nonvested at June 30, 2012

1,390


$
8.38