SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Jun. 30, 2015	Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]
Securities held to maturity, at carrying value	[1]	$ 204,444		$ 205,374
Held to maturity securities		210,349		209,437
Held to maturity securities unrealized gains before tax		6,400	$ 8,100
Obligations of States and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities held to maturity, at carrying value	[1]	204,444		205,374
Gross Unrealized Gains		7,436		5,748
Gross Unrealized Losses		(1,531)		(1,685)
Held to maturity securities		$ 210,349		$ 209,437

[1] The carrying value includes $6.4 million of net unrealized gains present at the time of transfer from available for securities, net of any accretion.