Note 10.

Securities

The amortized cost, estimated fair value, and unrealized gains and losses of securities available for sale are as follows:

(In thousands)	Amortized cost		Unrealized gains		Unrealized losses		Estimated fair value
June 30, 2013
U.S. Treasury	$	53,440	$	509	$	-	$	53,949
Federal Agency		286,049		192		6,783		279,458
State & municipal		125,792		2,375		1,493		126,674
Mortgage-backed:
Government-sponsored enterprises		260,130		6,149		1,487		264,792
U.S. government securities		25,608		1,269		75		26,802
Collateralized mortgage obligations:
Government-sponsored enterprises		573,487		2,677		6,747		569,417
U.S. government securities		52,421		970		40		53,351
Other securities		13,409		2,720		169		15,960
Total securities available for sale	$	1,390,336	$	16,861	$	16,794	$	1,390,403
December 31, 2012
U.S. Treasury	$	63,668	$	757	$	-	$	64,425
Federal Agency		281,398		1,507		91		282,814
State & municipal		82,675		4,127		-		86,802
Mortgage-backed:
Government-sponsored enterprises		221,110		11,175		-		232,285
U.S. government securities		16,351		1,645		-		17,996
Collateralized mortgage obligations:
Government-sponsored enterprises		399,147		4,418		-		403,565
U.S. government securities		44,825		1,333		-		46,158
Other securities		11,210		2,832		88		13,954
Total securities available for sale	$	1,120,384	$	27,794	$	179	$	1,147,999

Other securities primarily represent marketable equity securities.

Proceeds from the sales of securities available for sale were $26.2 million during the six months ended June 30, 2013, and gains on the sales were $1.1 million. Proceeds from the sales of securities available for sale were $1.8 million during the six months ended June 30, 2012, and gains on the sales were $0.6 million.

Securities with amortized costs totaling $1.5 billion at June 30, 2013 and $1.2 billion at December 31, 2012, were pledged to secure public deposits and for other purposes required or permitted by law. Additionally, at June 30, 2013 and December 31, 2012, securities available for sale with an amortized cost of $224.6 million and $209.0 million, respectively, were pledged as collateral for securities sold under repurchase agreements.

The amortized cost, estimated fair value, and unrealized gains and losses of securities held to maturity are as follows:

	Amortized		Unrealized		Unrealized		Estimated
(In thousands)	cost		gains		losses		fair value
June 30, 2013
Mortgage-backed	$	1,070	$	151	$	-	$	1,221
Collateralized mortgage oblications		64,022		-		1,964		62,058
State & municipal		57,210		580		-		57,790
Total securities held to maturity	$	122,302	$	731	$	1,964	$	121,069
December 31, 2012
Mortgage-backed	$	1,168	$	184	$	-	$	1,352
Collateralized mortgage oblications		-		-		-		0
State & municipal		59,395		788		-		60,183
Total securities held to maturity	$	60,563	$	972	$	-	$	61,535

The following table sets forth information with regard to investment securities with unrealized losses at June 30, 2013 and December 31, 2012:

	Less than 12 months							12 months or longer							Total
Security Type:	Fair Value		Unrealized losses			Number of Positions		Fair Value		Unrealized losses			Number of Positions		Fair Value		Unrealized losses			Number of Positions

June 30, 2013
Investment securities available for sale:
U.S. Treasury	$	-	$	-			-	$	-	$	-			-	$	-	$	-			-
Federal agency		286,049		(6,783	)		20		-		-			-		286,049		(6,783	)		20
State & municipal		125,792		(1,493	)		193		-		-			-		125,792		(1,493	)		193
Mortgage-backed		285,687		(1,562	)		94		-		-			-		285,687		(1,562	)		94
Collateralized mortgage obligations		625,908		(6,787	)		28		-		-			-		625,908		(6,787	)		28
Other securities		5,560		(132	)		2		211		(37	)		1		5,771		(169	)		3
Total securities with unrealized losses	$	1,328,996	$	(16,757	)		337	$	211	$	(37	)		1	$	1,329,207	$	(16,794	)		338

June 30, 2013
Investment securities held to maturity:
Collateralized mortgage obligations		64,022		(1,964	)		5		-		-			-		64,022		(1,964	)		5
Total securities with unrealized losses	$	64,022	$	(1,964	)		5	$	-	$	-			-	$	64,022	$	(1,964	)		5

	Less than 12 months							12 months or longer							Total
	Fair Value		Unrealized losses			Number of Positions		Fair Value		Unrealized losses			Number of Positions		Fair Value		Unrealized losses			Number of Positions
December 31, 2012
Investment securities available for sale:
U.S. Treasury	$	-	$	-			-	$	-	$	-			-	$	-	$	-			-
Federal agency		39,906		(91	)		4		-		-			-		39,906		(91	)		4
State & municipal		-		-			-		-		-			-		-		-			-
Mortgage-backed		-		-			-		-		-			-		-		-			-
Collateralized mortgage obligations		23		-			2		-		-			-		23		-			2
Other securities		468		(6	)		1		167		(82	)		1		635		(88	)		2
Total securities with unrealized losses	$	40,397	$	(97	)		7	$	167	$	(82	)		1	$	40,564	$	(179	)		8

Declines in the fair value of held-to-maturity and available-for-sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses or in other comprehensive income, depending on whether the Company intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis less any current-period credit loss. If the Company intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis less any current-period credit loss, the other-than-temporary impairment shall be recognized in earnings equal to the entire difference between the investment’s amortized cost basis and its fair value at the balance sheet date. If the Company does not intend to sell the security and it is not more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis less any current-period credit loss, the other-than-temporary impairment shall be separated into (a) the amount representing the credit loss and (b) the amount related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss shall be recognized in earnings. The amount of the total other-than-temporary impairment related to other factors shall be recognized in other comprehensive income, net of applicable taxes.

In estimating other-than-temporary impairment losses, management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) the historical and implied volatility of the fair value of the security.

Management has the intent to hold the securities classified as held to maturity until they mature, at which time it is believed the Company will receive full value for the securities. Furthermore, as of June 30, 2013, management also had the intent to hold, and will not be required to sell, the securities classified as available for sale for a period of time sufficient for a recovery of cost, which may be until maturity. The unrealized losses are due to increases in market interest rates over the yields available at the time the underlying securities were purchased. When necessary, the Company has performed a discounted cash flow analysis to determine whether or not it will receive the contractual principal and interest on certain securities. The fair value is expected to recover as the bonds approach their maturity date or repricing date or if market yields for such investments decline. As of June 30, 2013, management believes the impairments detailed in the table above are temporary and no other-than-temporary impairment losses have been realized in the Company’s consolidated statements of income.

The following tables set forth information with regard to contractual maturities of debt securities at June 30, 2013:

(In thousands)	Amortized cost		Estimated fair value
Debt securities classified as available for sale
Within one year	$	26,789	$	26,915
From one to five years		194,833		195,558
From five to ten years		348,099		345,525
After ten years		807,206		806,445
	$	1,376,927	$	1,374,443
Debt securities classified as held to maturity
Within one year	$	25,315	$	25,415
From one to five years		24,620		25,095
From five to ten years		5,651		5,656
After ten years		66,716		64,903
	$	122,302	$	121,069

Maturities of mortgage-backed, collateralized mortgage obligations and asset-backed securities are stated based on their estimated average lives. Actual maturities may differ from estimated average lives or contractual maturities because, in certain cases, borrowers have the right to call or prepay obligations with or without call or prepayment penalties.

Except for U.S. Government securities, there were no holdings, when taken in the aggregate, of any single issuer that exceeded 10% of consolidated stockholders’ equity at June 30, 2013.