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COMMON STOCK ACTIVITY (Tables)
 12 Months Ended
Dec. 31, 2012
Equity [Abstract]  
Common Stock Activity
The following table presents the common stock activity for the three years ended December 31, 2012:
 
Years Ended December 31,
2012
 
2011
 
2010
Common Shares
Shares outstanding at beginning of year
27,658,059

 
26,973,531

 
26,826,100

Common stock offerings                                                            
2,179,153

 
586,977

 
—

Stock options exercised                                                            
4,500

 
9,250

 
18,000

Dividend reinvestment plan                                                            
3,915

 
5,989

 
6,705

Incentive restricted stock granted                                                            
111,732

 
79,491

 
135,704

Incentive restricted stock forfeited                                                            
—

 
(233
)
 
—

Director common stock awarded                                                            
7,326

 
6,618

 
6,690

Restricted stock withheld for tax obligations
(36,195
)
 
(3,564
)
 
(19,668
)
Shares outstanding at end of year                                                            
29,928,490

 
27,658,059

 
26,973,531