SECURITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 778,261	$ 533,219
Gross Unrealized Gains	8,136	10,697
Gross Unrealized Losses	(3,212)	(2,111)
Fair Value	783,185	541,805
U.S. government sponsored agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,959	14,953
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(69)	(275)
Fair Value	14,890	14,678
State, county and municipal securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	157,681	137,873
Gross Unrealized Gains	4,046	3,935
Gross Unrealized Losses	(411)	(433)
Fair Value	161,316	141,375
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,900	10,812
Gross Unrealized Gains	145	228
Gross Unrealized Losses	(28)	0
Fair Value	6,017	11,040
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	599,721	369,581
Gross Unrealized Gains	3,945	6,534
Gross Unrealized Losses	(2,704)	(1,403)
Fair Value	$ 600,962	$ 374,712

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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