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Benefit Plans Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2012
Benefit Plans [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The more significant assumptions underlying the determination of fair value for options granted were as follows:

 
 
2010 Options
 
2009 Options
 
2008 Options
Weighted-average fair value of options granted
 
$
1.94

 
$
2.19

 
$
1.24

Weighted-average risk-free interest rate
 
2.54
%
 
3.29
%
 
1.33
%
Weighted-average expected option lives (in years)
 
6.50

 
6.70

 
3.60

Weighted-average expected volatility
 
49.00
%
 
59.08
%
 
59.94
%
Weighted-average expected dividend yield
 
7.40
%
 
6.26
%
 
14.40
%
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Share option activity during the years indicated is as follows:
 
 Number of
Shares
 
Weighted-Average
Exercise Price
Per Share
Balance at December 31, 2009
2,252,000

 
$
4.97

Granted
2,514,001

 
7.16

Exercised
(352,628
)
 
4.97

Forfeited
(23,768
)
 
5.18

Balance at December 31, 2010
4,389,605

 
6.23

Exercised
(501,324
)
 
5.16

Balance at December 31, 2011
3,888,281

 
6.36

Exercised
(408,201
)
 
5.73

Balance at December 31, 2012
3,480,080

 
$
6.44
Schedule of Nonvested Share Activity [Table Text Block]
Non-vested share activity for the years ended December 31, 2012 and 2011, is as follows:
 
Number of
Shares
 
Weighted-Average
Value Per Share
Balance at December 31, 2010
819,577

 
$
10.16

Granted
582,102

 
7.49

Vested
(211,954
)
 
13.56

Forfeited
(10,140
)
 
21.99

Balance at December 31, 2011
1,179,585

 
8.13

Granted
606,500

 
9.75

Vested
(320,639
)
 
8.86

Balance at December 31, 2012
1,465,446

 
$
8.64