Securities Available-for-Sale (Tables)

9 Months Ended

Sep. 30, 2012

Securities Available-for-Sale and Investment Securities Held-to-Maturity [Abstract]

Summary of Securities Available-for-Sale

	September 30, 2012								December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	( In thousands)
U.S. Treasury	$	1,999	$	6	$	—	$	2,005	$	1,999	$	13	$	—	$	2,012
U.S. Government Sponsored Enterprises		85,035		334		—		85,369		174,657		311		11		174,957
Small Business Administration		8,142		113		—		8,255		8,714		87		—		8,801
U.S. Government Agency and Sponsored Enterprises Mortgage Backed Securities		1,041,144		21,187		250		1,062,081		1,020,752		16,262		1,176		1,035,838
Privately Issued Residential Mortgage Backed Securities		3,072		32		21		3,083		3,509		—		311		3,198
Obligations Issued by States and Political Subdivisions		66,377		52		960		65,469		21,515		84		957		20,642
Other Debt Securities		2,300		—		36		2,264		13 ,293		—		683		12,610
Equity Securities		458		115		—		573		533		85		—		618
Total	$	1,208,527	$	21,839	$	1,267	$	1,229,099	$	1,244,972	$	16,842	$	3,138	$	1,258,676

Maturity distribution of securities available-for-sale

The following table shows the maturity distribution of the Company’s securities available-for-sale at September 30, 2012.

	Amortized Cost		Fair Value
	( In thousands)
Within one year	$	96,169	$	96,670
After one but within five years		925,961		943,843
After five but within ten years		173,923		176,773
More than 10 years		10,516		9,776
Non-maturing		1,958		2,037
Total	$	1,208,527	$	1,229,099

Continuous unrealized loss position for 12 months or less and 12 months or longer

The following table shows the temporarily impaired securities of the Company’s available-for-sale portfolio at September 30, 2012. This table shows the unrealized market loss of securities that have been in a continuous unrealized loss position for 12 months or less and a continuous loss position for 12 months and longer. There are 9 and 7 securities that are temporarily impaired for less than 12 months and for 12 months or longer, respectively, out of a total of 444 holdings at September 30, 2012.

	September 30, 2012
	Less than 12 months				12 months or longer				Total
Temporarily Impaired Investments	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(In thousands)
U.S. Government Sponsored Enterprises	$	—	$	—	$	—	$	—	$	—	$	—
U.S. Government Agency and Sponsored Enterprises Mortgage Backed Securities		52,036		221		11,629		29		63,665		250
Privately Issued Residential Mortgage Backed Securities		—		—		1,939		21		1,939		21
Obligations Issued by States and Political Subdivisions		—		—		3,725		960		3,725		960
Other Debt Securities		—		—		1,464		36		1,464		36
Total temporarily impaired securities	$	52,036	$	221	$	18,757	$	1,046	$	70,793	$	1,267

The following table shows the temporarily impaired securities of the Company’s available-for-sale portfolio at December 31, 2011. This table shows the unrealized market loss of securities that have been in a continuous unrealized loss position for 12 months or less and a continuous loss position for 12 months and longer. There are 60 and 6 securities that are temporarily impaired for less than 12 months and for 12 months or longer, respectively, out of a total of 393 holdings at December 31, 2011.

	December 31, 2011
	Less than 12 months				12 months or longer				Total
Temporarily Impaired Investments	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(In thousands)
U.S. Government Sponsored Enterprises	$	14,989	$	11	$	—	$	—	$	14,989	$	11
U.S. Government Agency and Sponsored Enterprises Mortgage Backed Securities		331,469		1,176		—		—		331,469		1,176
Privately Issued Residential Mortgage Backed Securities		—		—		3,198		311		3,198		311
Obligations Issued by States and Political Subdivisions		—		—		3,725		957		3,725		957
Other Debt Securities		10,542		652		1,468		31		12,010		683
Equity Securities		—		—		—		—		—		—
Total temporarily impaired securities	$	357,000	$	1,839	$	8,391	$	1,299	$	365,391	$	3,138