Investment Securities (Tables)

3 Months Ended

Mar. 31, 2015

Investment Securities [Abstract]

Amortized cost and fair value of the securities available for sale

The amortized cost and fair value of the securities available for sale are as follows:

(dollars in thousands)	March 31, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. government sponsored enterprises	$	108,421		67		240		108,248
State and political subdivisions		1,939		35		-		1,974
Mortgage backed securities and collateralized mortgage obligations - residential		446,068		1,461		2,256		445,273
Corporate bonds		1,500		-		-		1,500
Small Business Administration-guaranteed participation securities		100,704		-		2,036		98,668
Mortgage backed securities and collateralized mortgage obligations - commercial		10,628		-		125		10,503
Other		650		-		-		650
Total debt securities		669,910		1,563		4,657		666,816
Equity securities		35		-		-		35
Total securities available for sale	$	669,945		1,563		4,657		666,851

(dollars in thousands)	December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. government sponsored enterprises	$	78,420		2		622		77,800
State and political subdivisions		2,232		39		-		2,271
Mortgage backed securities and collateralized mortgage obligations - residential		486,107		1,108		3,655		483,560
Corporate bonds		1,500		-		-		1,500
Small Business Administration-guaranteed participation securities		103,273		-		2,777		100,496
Mortgage backed securities and collateralized mortgage obligations - commercial		10,696		-		249		10,447
Other		650		-		-		650
Total debt securities		682,878		1,149		7,303		676,724
Equity securities		35		-		-		35
Total securities available for sale	$	682,913		1,149		7,303		676,759

Proceeds from sales and calls of securities available for sale, gross realized gains and gross realized losses

The proceeds from sales and calls of securities available for sale, gross realized gains and gross realized losses from sales and calls during the three months ended March 31, 2015 and 2014 are as follows:

(dollars in thousands)	Three months ended March 31,
	2015		2014
Proceeds from sales	$	22,945		-
Proceeds from calls		29,680		141,322
Gross realized gains		249		6
Gross realized losses		-		-

Amortized cost and fair value of the held to maturity securities

The amortized cost and fair value of the held to maturity securities are as follows:

(dollars in thousands)	March 31, 2015
	Amortized Cost		Gross Unrecognized Gains		Gross Unrecognized Losses		Fair Value
Mortgage backed securities and collateralized mortgage obligations - residential	$	57,296		3,397		-		60,693
Corporate bonds		9,964		1,018		-		10,982
Total held to maturity	$	67,260		4,415		-		71,675

(dollars in thousands)	December 31, 2014
	Amortized Cost		Gross Unrecognized Gains		Gross Unrecognized Losses		Fair Value
Mortgage backed securities and collateralized mortgage obligations - residential	$	60,986		3,334		-		64,320
Corporate bonds		9,960		1,062		-		11,022
Total held to maturity	$	70,946		4,396		-		75,342

Securities available for sale [Member]

Investment [Line Items]

Debt securities based on the securities final maturity

The following table distributes the debt securities included in the available for sale portfolio as of March 31, 2015, based on the securities’ final maturity (mortgage backed securities and collateralized mortgage obligations are stated using an estimated average life):

(dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	4,087		4,092
Due in one year through five years		523,915		522,927
Due after five years through ten years		141,890		139,779
Due after ten years		18		18
	$	669,910		666,816

Gross unrealized losses on investment securities and the related fair values aggregated by the length of time that individual securities have been in an unrealized loss position

Gross unrealized losses on securities available for sale and the related fair values aggregated by the length of time that individual securities have been in an unrealized loss position, were as follows:

(dollars in thousands)	March 31, 2015
	Less than 12 months				12 months or more				Total
	Fair Value		Gross Unreal. Loss		Fair Value		Gross Unreal. Loss		Fair Value		Gross Unreal. Loss
U.S. government sponsored enterprises	$	5,994		8		55,787		232		61,781		240
Mortgage backed securities and collateralized mortgage obligations - residential		136,827		608		184,915		1,648		321,742		2,256
Small Business Administration-guaranteed participation securities		8,043		96		90,624		1,940		98,667		2,036
Mortgage backed securities and collateralized mortgage obligations - commercial		-		-		10,503		125		10,503		125
Total	$	150,864		712		341,829		3,945		492,693		4,657

(dollars in thousands)	December 31, 2014
	Less than 12 months				12 months or more				Total
	Fair Value		Gross Unreal. Loss		Fair Value		Gross Unreal. Loss		Fair Value		Gross Unreal. Loss
U.S. government sponsored enterprises	$	12,840		81		54,959		541		67,799		622
Mortgage backed securities and collateralized mortgage obligations - residential		65,549		492		325,476		3,163		391,025		3,655
Small Business Administration-guaranteed participation securities		-		-		100,496		2,777		100,496		2,777
Mortgage backed securities and collateralized mortgage obligations - commercial		-		-		10,447		249		10,447		249
Total	$	78,389		573		491,378		6,730		569,767		7,303

Held to maturity securities [Member]

Investment [Line Items]

Debt securities based on the securities final maturity

The following table distributes the debt securities included in the held to maturity portfolio as of March 31, 2015, based on the securities’ final maturity (mortgage backed securities and collateralized mortgage obligations are stated using an estimated average life):

(dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	-		-
Due in one year through five years		67,260		71,675
Due in five years through ten years		-		-
	$	67,260		71,675