Investment Securities (Tables)

9 Months Ended

Sep. 30, 2012

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities

	Investment Securities Available-for-Sale
	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
	(In thousands)
September 30, 2012
Government sponsored agencies	$	101,576	$	182	$	266	$	101,492
State and political subdivisions	49,707		2,538		7		52,238
Residential mortgage-backed securities	101,709		3,543		16		105,236
Collateralized mortgage obligations	297,960		1,392		274		299,078
Corporate bonds	82,219		509		622		82,106
Preferred stock	6,144		284		—		6,428
Total	$	639,315	$	8,448	$	1,185	$	646,578
December 31, 2011
Government sponsored agencies	$	70,486	$	240	$	47	$	70,679
State and political subdivisions	42,881		2,354		—		45,235
Residential mortgage-backed securities	117,198		3,883		301		120,780
Collateralized mortgage obligations	332,632		600		832		332,400
Corporate bonds	97,558		45		835		96,768
Preferred stock	1,389		46		21		1,414
Total	$	662,144	$	7,168	$	2,036	$	667,276
September 30, 2011
Government sponsored agencies	$	74,381	$	241	$	61	$	74,561
State and political subdivisions	43,647		1,817		—		45,464
Residential mortgage-backed securities	125,400		3,910		446		128,864
Collateralized mortgage obligations	295,347		1,029		444		295,932
Corporate bonds	64,828		35		679		64,184
Preferred stock	1,389		99		—		1,488
Total	$	604,992	$	7,131	$	1,630	$	610,493

Held-to-maturity Securities

	Investment Securities Held-to-Maturity
	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
	(In thousands)
September 30, 2012
State and political subdivisions	$	211,036	$	8,661	$	1,712	$	217,985
Trust preferred securities	10,500		—		5,300		5,200
Total	$	221,536	$	8,661	$	7,012	$	223,185
December 31, 2011
State and political subdivisions	$	172,839	$	6,807	$	342	$	179,304
Trust preferred securities	10,500		—		6,035		4,465
Total	$	183,339	$	6,807	$	6,377	$	183,769
September 30, 2011
State and political subdivisions	$	175,932	$	5,635	$	1,008	$	180,559
Trust preferred securities	10,500		—		6,035		4,465
Total	$	186,432	$	5,635	$	7,043	$	185,024

Amortized cost and fair value of debt securities by contractual maturity

	September 30, 2012
	Amortized Cost		Fair Value
	(In thousands)
Investment Securities Available-for-Sale:
Due in one year or less	$	171,593	$	173,000
Due after one year through five years	326,357		328,800
Due after five years through ten years	66,831		69,093
Due after ten years	68,390		69,257
Preferred stock	6,144		6,428
Total	$	639,315	$	646,578
Investment Securities Held-to-Maturity:
Due in one year or less	$	38,910	$	41,225
Due after one year through five years	94,392		96,740
Due after five years through ten years	57,290		59,023
Due after ten years	30,944		26,197
Total	$	221,536	$	223,185

Summary of continuous unrealized loss position of securities

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In thousands)
September 30, 2012
Government sponsored agencies	$	39,729	$	248	$	8,808	$	18	$	48,537	$	266
State and political subdivisions	69,841		1,711		1,533		8		71,374		1,719
Residential mortgage-backed securities	32		1		19,704		15		19,736		16
Collateralized mortgage obligations	12,036		45		47,066		229		59,102		274
Corporate bonds	19,469		531		24,900		91		44,369		622
Trust preferred securities	—		—		5,200		5,300		5,200		5,300
Total	$	141,107	$	2,536	$	107,211	$	5,661	$	248,318	$	8,197
December 31, 2011
Government sponsored agencies	$	9,883	$	36	$	9,632	$	11	$	19,515	$	47
State and political subdivisions	—		—		31,706		342		31,706		342
Residential mortgage-backed securities	27,367		152		19,018		149		46,385		301
Collateralized mortgage obligations	200,218		703		18,176		129		218,394		832
Corporate bonds	50,590		415		14,580		420		65,170		835
Trust preferred securities	—		—		4,465		6,035		4,465		6,035
Preferred stock	—		—		319		21		319		21
Total	$	288,058	$	1,306	$	97,896	$	7,107	$	385,954	$	8,413
September 30, 2011
Government sponsored agencies	$	28,763	$	59	$	2,753	$	2	$	31,516	$	61
State and political subdivisions	38,661		874		7,544		134		46,205		1,008
Residential mortgage-backed securities	29,560		343		19,206		103		48,766		446
Collateralized mortgage obligations	108,302		367		16,164		77		124,466		444
Corporate bonds	37,658		648		2,467		31		40,125		679
Trust preferred securities	—		—		4,465		6,035		4,465		6,035
Total	$	242,944	$	2,291	$	52,599	$	6,382	$	295,543	$	8,673