SECURITIES (Narrative) (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014 Securities	Mar. 31, 2013	Dec. 31, 2013
Schedule of Investments [Line Items]
Unrealized gains on securities available-for-sale included in accumulated other comprehensive income, net of deferred taxes	$ 6,139,000		$ 7,964,000
Unrealized gains on securities available-for-sale included in accumulated other comprehensive income, deferred taxes	3,300,000		4,300,000
Payments to Acquire Investments	26,400,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	92
AFS and HTM securities in Continues Unrealized Loss Position	485,552,000
AFS and HTM Securities Unrealized Loss Accumulated in Investments	17,029,000
Fair Value - 12 Months of More	146,583,000		122,236,000
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Accumulated In Investments	8,365,000		7,834,000
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities			0
Carrying amount of investment securities sold	9,300,000	4,700,000
Gain (Loss) on Investments	166,000	138,000
Security pledged as collateral, amortized cost	468,600,000		479,200,000
Security pledged as collateral, fair value	464,400,000		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	22
Fair Value - 12 Months of More	142,017,000
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	5
Fair Value - 12 Months of More	4,566,000		4,945,000
AFS in Continued Unrealized Loss Position, Fair Value	4,566,000
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Accumulated In Investments	373,000		403,000
Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Payments to Acquire Investments	19,400,000
Held-to-maturity Securities [Member]
Schedule of Investments [Line Items]
Payments to Acquire Investments	$ 7,000,000