Investment Securities (Tables)

3 Months Ended

Mar. 31, 2014

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:

	March 31, 2014
(dollars in thousands)			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. government sponsored enterprises	$	93,805		39		1,136		92,708
State and political subdivisions		4,862		106		-		4,968
Mortgage backed securities and collateralized mortgage obligations - residential		538,002		442		14,247		524,197
Corporate bonds		6,403		1		2		6,402
Small Business Administration- guaranteed participation securities		109,280		-		7,459		101,821
Mortgage backed securities and collateralized mortgage obligations - commercial		10,898		-		355		10,543
Other		650		-		7		643
Total debt securities		763,900		588		23,206		741,282
Equity securities		10		-		-		10
Total securities available for sale	$	763,910		588		23,206		741,292

	December 31, 2013
(dollars in thousands)			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. government sponsored enterprises	$	200,531		22		1,724		198,829
State and political subdivisions		7,623		135		-		7,758
Mortgage backed securities and collateralized mortgage obligations - residential		552,230		267		20,048		532,449
Corporate bonds		10,429		43		1		10,471
Small Business Administration- guaranteed participation securities		111,383		-		8,354		103,029
Mortgage backed securities and collateralized mortgage obligations - commercial		10,965		-		407		10,558
Other		650		-		-		650
Total debt securities		893,811		467		30,534		863,744
Equity securities		10		-		-		10
Total securities available for sale	$	893,821		467		30,534		863,754

Investment [Line Items]

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 end March 31, 2014 and 2013 are as follows:

(dollars in thousands)	Three months ended March 31,
	2014		2013
Proceeds from sales	$	-		-
Proceeds from calls		141,322		108,997
Gross realized gains		6		2
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:

	March 31, 2014
(dollars in thousands)			Gross		Gross
	Amortized		Unrecognized		Unrecognized		Fair
	Cost		Gains		Losses		Value
Mortgage backed securities and collateralized mortgage obligations - residential	$	72,188		3,194		41		75,341
Corporate bonds		9,948		1,380		-		11,328
Total held to maturity	$	82,136		4,574		41		86,669

	December 31, 2013
(dollars in thousands)			Gross		Gross
	Amortized		Unrecognized		Unrecognized		Fair
	Cost		Gains		Losses		Value
Mortgage backed securities and collateralized mortgage obligations - residential	$	76,270		2,744		138		78,876
Corporate bonds		9,945		1,484		-		11,429
Total held to maturity	$	86,215		4,228		138		90,305

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, 2014, based on the securities’ final maturity (mortgage-backed securities and collateralized mortgage obligations are stated using an estimated average life):

(dollars in thousands)	Amortized		Fair
	Cost		Value
Due in one year or less	$	7,195		7,215
Due in one year through five years		247,453		245,708
Due after five years through ten years		507,942		487,028
Due after ten years		1,310		1,331
	$	763,900		741,282

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:

	March 31, 2014
(dollars in thousands)	Less than				12 months
	12 months				or more				Total
			Gross				Gross				Gross
	Fair		Unreal.		Fair		Unreal.		Fair		Unreal.
	Value		Loss		Value		Loss		Value		Loss
U.S. government sponsored enterprises	$	86,885		1,136		-		-		86,885		1,136
Mortgage backed securities and collateralized mortgage obligations - residential		400,364		11,436		84,672		2,811		485,036		14,247
Corporate bonds		501		2		-		-		501		2
Small Business Administration- guaranteed participation securities		39,184		2,699		62,637		4,760		101,821		7,459
Mortgage backed securities and collateralized mortgage obligations - commercial		10,543		355		-		-		10,543		355
Other		593		7		-		-		593		7
Total	$	538,070		15,635		147,309		7,571		685,379		23,206

	December 31, 2013
(dollars in thousands)	Less than				12 months
	12 months				or more				Total
			Gross				Gross				Gross
	Fair		Unreal.		Fair		Unreal.		Fair		Unreal.
	Value		Loss		Value		Loss		Value		Loss
U.S. government sponsored enterprises	$	198,023		1,724		-		-		198,023		1,724
Mortgage backed securities and collateralized mortgage obligations - residential		466,056		17,698		54,835		2,350		520,891		20,048
Corporate bonds		902		1		-		-		902		1
Small Business Administration- guaranteed participation securities		103,029		8,354		-		-		103,029		8,354
Mortgage backed securities and collateralized mortgage obligations - commercial		10,558		407		-		-		10,558		407
Total	$	778,568		28,184		54,835		2,350		833,403		30,534

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, 2014, based on the securities’ final maturity (mortgage-backed securities and collateralized mortgage obligations are stated using an estimated average life):

(dollars in thousands)	Amortized		Fair
	Cost		Value
Due in one year or less	$	-		-
Due in one year through five years		80,433		84,866
Due in five years through ten years		1,703		1,803
	$	82,136		86,669

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 unrecognized losses on held to maturity securities and the related fair values aggregated by the length of time that individual securities have been in an unrecognized loss position were as follows:

	March 31, 2014
(dollars in thousands)	Less than					12 months
	12 months					or more				Total
	Fair Value			Gross Unrec. Loss		Fair Value		Gross Unrec. Loss		Fair Value		Gross Unrec. Loss
Mortgage backed securities and collateralized mortgage obligations - residential		$	10,576		41		-		-		10,576		41
Total		$	10,576		41		-		-		10,576		41

	December 31, 2013
(dollars in thousands)	Less than				12 months
	12 months				or more				Total
	Fair Value		Gross Unrec. Loss		Fair Value		Gross Unrec. Loss		Fair Value		Gross Unrec. Loss
Mortgage backed securities and collateralized mortgage obligations - residential	$	27,091		138		-		-		27,091		138
Total	$	27,091		138		-		-		27,091		138