AVAILABLE-FOR-SALE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2013

AVAILABLE-FOR-SALE SECURITIES [Abstract]

Amortized cost and estimated fair values of available-for-sale securities

	2013
		Gross	Gross	Estimated
	Amortized	Unrealized	Unrealized	Fair
	Cost	Gains	Losses	Value
	(In thousands)
U.S. Government agencies	$   1,455,417	$        9,065	$        6,133	$   1,458,349
Government agency issued residential
mortgage-backed securities	249,682	3,118	2,566	250,234
Government agency issued commercial
mortgage-backed securities	239,313	1,773	10,174	230,912
Obligations of states and political subdivisions	509,255	12,883	2,733	519,405
Other	6,941	1,148	-	8,089
Total	$   2,460,608	$      27,987	$      21,606	$   2,466,989
	2012
		Gross	Gross	Estimated
	Amortized	Unrealized	Unrealized	Fair
	Cost	Gains	Losses	Value
	(In thousands)
U.S. Government agencies	$   1,380,979	$      21,081	$             64	$   1,401,996
Government agency issued residential
mortgage-backed securities	358,677	8,457	259	366,875
Government agency issued commercial
mortgage-backed securities	87,314	4,266	135	91,445
Obligations of states and political subdivisions	531,940	34,049	116	565,873
Other	7,052	791	-	7,843
Total	$   2,365,962	$      68,644	$           574	$   2,434,032

Amortized cost and estimated fair value of available-for-sale securities by contractual maturity

		Estimated	Weighted
	Amortized	Fair	Average
	Cost	Value	Yield
	(Dollars in thousands)
Maturing in one year or less	$      504,785	$      507,800	1.52	%
Maturing after one year through five years	1,091,317	1,093,947	1.30
Maturing after five years through ten years	160,222	163,839	5.71
Maturing after ten years	215,289	220,257	5.86
Mortgage-backed securities	488,995	481,146	2.15
Total	$   2,460,608	$   2,466,989

Temporarily impaired available-for-sale securities with continuous unrealized loss positions

	2013
	Less Than 12 Months		12 Months or Longer		Total
	Fair	Unrealized	Fair	Unrealized	Fair	Unrealized
	Value	Losses	Value	Losses	Value	Losses
	(In thousands)
U.S. Government agencies	$        533,326	$            6,133	$                    -	$                   -	$         533,326	$            6,133
Government agency issued residential
mortgage-backed securities	106,179	2,418	4,407	148	110,586	2,566
Government agency issued commercial
mortgage-backed securities	176,253	8,578	27,225	1,596	203,478	10,174
Obligations of states and political subdivisions	97,543	2,555	3,663	178	101,206	2,733
Total	$        913,301	$          19,684	$           35,295	$            1,922	$         948,596	$          21,606
	2012
	Less Than 12 Months		12 Months or Longer		Total
	Fair	Unrealized	Fair	Unrealized	Fair	Unrealized
	Value	Losses	Value	Losses	Value	Losses
	(In thousands)
U.S. Government agencies	$          47,395	$                 64	$                    -	$                   -	$           47,395	$                 64
Government agency issued residential
mortgage-backed securities	55,939	145	2,839	114	58,778	259
Government agency issued commercial
mortgage-backed securities	26,239	135	-	-	26,239	135
Obligations of states and political subdivisions	9,247	73	313	43	9,560	116
Total	$        138,820	$               417	$             3,152	$               157	$         141,972	$               574