EARNINGS PER SHARE (Reconciliation of the Denominators of the Basic and Diluted EPS Computations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Basic EPS, Net Income Available to Common Stockholders (Numerator)	$ 19,337	$ 15,348	$ 36,298	$ 31,049
Basic EPS, Weighted Average Shares (Denominator)	43,746,583	45,128,698	43,998,929	45,117,396
Basic EPS, Per Share Amount (in usd per share)	$ 0.44	$ 0.34	$ 0.82	$ 0.69
Effect of dilutive stock awards, Weighted Average Shares (Denominator)	77,000	81,000	77,000	82,000
Diluted EPS, Net Income Available to Common Stockholders (Numerator)	$ 19,337	$ 15,348	$ 36,298	$ 31,049
Diluted EPS, Weighted Average Common Shares	43,824,183	45,209,814	44,075,706	45,198,727
Diluted EPS, Per Share Amount (in usd per share)	$ 0.44	$ 0.34	$ 0.82	$ 0.69