INCOME TAXES (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Tax at federal income tax rate									$ 19,860	$ 19,672	$ 10,256
Change resulting from:
Tax-exempt interest									(2,490)	(1,647)	(841)
Increase in cash value of bank owned life insurance									(484)	(568)	(446)
State income tax, net of federal benefit									667	304	328
Other									(1,656)	(279)	(12)
Provision for income taxes	$ 3,296	$ 7,368	$ 486	$ 4,747	$ 4,167	$ 5,122	$ 4,270	$ 3,923	$ 15,897	$ 17,482	$ 9,285