EARNINGS PER SHARE (Reconcilement of the Denominators of the Basic and Diluted EPS Computations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Reconcilement of the denominators of the basic and diluted EPS computations
Basic EPS, Net Income Available to Common Stockholders (Numerator)	$ 16,961	$ 15,701
Basic EPS, Weighted Average Shares (Denominator)	44,251,276	45,105,969
Basic EPS, Per Share Amount	$ 0.38	$ 0.35
Effect of dilutive stock awards, Weighted Average Shares (Denominator)	76,000	82,000
Diluted EPS, Net Income Available to Common Stockholders (Numerator)	$ 16,961	$ 15,701
Diluted EPS, Weighted Average Common Shares	44,327,229	45,187,516
Diluted EPS, Per Share Amount	$ 0.38	$ 0.35