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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY [Parenthetical] (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dividends per share (in dollars per share) $ 0.19 [1] $ 0.18 [1]
Exercise of stock options (in shares) 34,063 1,000
Excess tax benefit related to stock option plans (in dollars) $ 14 $ 1
[1] Per share amounts for the period ended March 31, 2013 have been adjusted to give effect to the 5% stock dividend paid during December 2013.