SECURITIES (Narrative) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014 security	Sep. 30, 2013	Sep. 30, 2014 security	Sep. 30, 2013	Dec. 31, 2013
Schedule of Investments [Line Items]
Net unrealized losses on available-for-sale securities, net of tax	$ 3,151,000		$ 3,151,000		$ 7,964,000
Deferred tax assets, unrealized losses on available for sale securities	1,700,000		1,700,000		4,300,000
Payments to Acquire Investments			74,100,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	83		83
AFS and HTM securities in Continues Unrealized Loss Position	472,400,000		472,400,000
AFS and HTM Securities Unrealized Loss Accumulated in Investments	11,800,000		11,800,000
Fair Value - 12 Months of More	322,592,000		322,592,000		122,236,000
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities			0
Carrying amount of investment securities sold		12,100,000	25,200,000	16,800,000
Gain (Loss) on Investments	0	647,000	451,000	785,000
Security pledged as collateral, amortized cost	480,500,000		480,500,000		479,200,000
Security pledged as collateral, fair value	478,900,000		478,900,000		474,700,000
Mortgage Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	49		49
Fair Value - 12 Months of More	322,592,000		322,592,000
Private issue collateralized mortgage obligations
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	0		0
Fair Value - 12 Months of More	0		0		4,945,000
Available-for-sale Securities
Schedule of Investments [Line Items]
Payments to Acquire Investments			62,500,000
Held-to-maturity Securities
Schedule of Investments [Line Items]
Payments to Acquire Investments			$ 11,600,000