SECURITIES - Securities Available for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	$ 295,213		$ 295,213		$ 344,480
Unrealized Gains	5,065		5,065		2,104
Unrealized Losses	1		1		1,764
Estimated Fair Value	300,277		300,277		344,820
Amortized Cost [Abstract]
Within one year	42,624		42,624
After one, but within five years	58,008		58,008
After five, but within ten years	10,009		10,009
After ten years	0		0
Total	110,641		110,641
Total	294,929		294,929
Fair Value [Abstract]
Within one year	42,828		42,828
After one, but within five years	59,164		59,164
After five, but within ten years	10,490		10,490
After ten years	0		0
Total	112,482		112,482
Total	299,808		299,808
Proceeds from sales and calls of securities resulting in gains or losses [Abstract]
Proceeds	0	$ 54,268	15,422	$ 54,319
Gross gains	0	252	908	302
Tax expense	0	$ 97	343	$ 116
Obligations of U.S. Government and U.S. Government Sponsored Enterprises [Member]
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	69,651		69,651		99,430
Unrealized Gains	680		680		752
Unrealized Losses	0		0		16
Estimated Fair Value	70,331		70,331		100,166
Mortgage-Backed Securities, Residential [Member]
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	183,682		183,682		199,680
Unrealized Gains	3,035		3,035		427
Unrealized Losses	0		0		1,741
Estimated Fair Value	186,717		186,717		198,366
Amortized Cost [Abstract]
Without Single Maturity Date	183,682		183,682
Fair Value [Abstract]
Without Single Maturity Date	186,717		186,717
Obligations of States and Political Subdivisions [Member]
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	40,242		40,242		43,695
Unrealized Gains	1,153		1,153		737
Unrealized Losses	0		0		6
Estimated Fair Value	41,395		41,395		44,426
Corporate Bonds and Notes [Member]
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	748		748		747
Unrealized Gains	8		8		5
Unrealized Losses	0		0		0
Estimated Fair Value	756		756		752
SBA Loans Pools [Member]
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	606		606		643
Unrealized Gains	4		4		5
Unrealized Losses	1		1		1
Estimated Fair Value	609		609		647
Amortized Cost [Abstract]
Without Single Maturity Date	606		606
Fair Value [Abstract]
Without Single Maturity Date	609		609
Corporate Stocks [Member]
Amortized cost and estimated fair value of securities available for sale [Abstract]
Amortized Cost	284		284		285
Unrealized Gains	185		185		178
Unrealized Losses	0		0		0
Estimated Fair Value	$ 469		$ 469		$ 463