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EARNINGS PER SHARE - Reconciliation of weighted average shares outstanding (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
EARNINGS PER SHARE        
Net income available for stockholders: $ 2,002 $ 2,110 $ 5,386 $ 5,915
Less: Dividends paid (1,140) (754) (3,423) (2,264)
Undistributed earnings $ 862 $ 1,356 $ 1,963 $ 3,651
Basic shares outstanding:        
Common stock 35,556 35,514 35,516 35,525
Restricted shares of common stock 1,271 1,134 1,263 1,123
Basic shares outstanding, Total 36,827 36,648 36,779 36,648
Diluted shares outstanding:        
Common stock 35,556 35,514 35,516 35,525
Dilutive effect of stock based awards 353 110 279 145
Diluted shares outstanding excluding restricted shares of common stock, Total 35,909 35,624 35,795 35,670
Restricted shares of common stock 1,271 1,134 1,263 1,123
Diluted shares outstanding, Total 37,180 36,758 37,058 36,793