EARNINGS PER SHARE (Reconcilement of the Denominators of the Basic and Diluted EPS Computations) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconcilement of the denominators of the basic and diluted EPS computations
Basic EPS, Net Income Available to Common Stockholders (Numerator)	$ 34,496	$ 35,411	$ 27,769
Basic EPS, Weighted Average Shares (Denominator)	24,975	25,872	25,981
Basic EPS, Per Share Amount	$ 1.38	$ 1.37	$ 1.07
Effect of dilutive stock awards, Weighted Average Shares (Denominator)	56	29	29
Diluted EPS, Net Income Available to Common Stockholders (Numerator)	$ 34,496	$ 35,411	$ 27,769
Diluted EPS, Weighted Average Common Shares	25,031	25,901	26,010
Diluted EPS, Per Share Amount	$ 1.38	$ 1.37	$ 1.07