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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, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Earnings Per Share        
Net income available for stockholders $ 1,882 $ 2,002 $ 6,873 $ 5,386
Less: Dividends paid (1,144) (1,140) (3,435) (3,423)
Undistributed earnings $ 738 $ 862 $ 3,438 $ 1,963
Basic shares outstanding:        
Common stock 35,642 35,556 35,710 35,516
Restricted shares of common stock 1,262 1,271 1,240 1,263
Basic shares outstanding, Total 36,904 36,827 36,950 36,779
Diluted shares outstanding:        
Common stock 35,642 35,556 35,710 35,516
Dilutive effect of stock based awards 286 353 286 279
Diluted shares outstanding excluding restricted shares of common stock, Total 35,928 35,909 35,996 35,795
Restricted shares of common stock 1,262 1,271 1,240 1,263
Diluted shares outstanding, Total 37,190 37,180 37,236 37,058