ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Reclassification adjustments from accumulated other comprehensive income
Gain on sale of securities	$ 4,752	$ (272)	$ 409
Income tax expense	(14,576)	(9,135)	(7,719)
Net earnings	25,080	3,109	13,494
Unrealized gains on available-for-sale securities | Amount Reclassified from AOCI
Reclassification adjustments from accumulated other comprehensive income
Gain on sale of securities	4,752		409
Income tax expense	(1,996)		(172)
Net earnings	$ 2,756		$ 237