Investment Securities (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. government sponsored enterprises	$	154,861		-		3,534		151,327
State and political subdivisions		515		10		-		525
Corporate bonds		35,347		-		120		35,227
Mortgage backed securities and collateralized mortgage obligations - residential		307,679		75		10,121		297,633
Small Business Administration-  guaranteed participation securities		66,153		-		2,040		64,113
Mortgage backed securities and  collateralized mortgage obligations - commercial		9,743		-		170		9,573
Other		685		-		-		685
Total Securities Available for Sale	$	574,983	$	85	$	15,985	$	559,083

(dollars in thousands)	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. government  sponsored enterprises	$	139,890		27		2,066		137,851
State and political  subdivisions		515		10		-		525
Mortgage backed securities and collateralized mortgage obligations - residential		320,614		84		4,715		315,983
Corporate bonds		40,270		-		108		40,162
Small Business Administration- guaranteed participation securities		68,921		-		1,862		67,059
Mortgage backed securities and collateralized mortgage obligations - commercial		9,810		-		110		9,700
Other		685		-		-		685
Total Securities Available for Sale	$	580,705		121		8,861		571,965

Investment [Line Items]

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, 2018
	Amortized Cost		Gross Unrecognized Gains		Gross Unrecognized Losses		Fair Value
Mortgage backed securities and collateralized mortgage obligations - residential	$	26,174		882		62		26,994
Total held to maturity	$	26,174		882		62		26,994

(dollars in thousands)	December 31, 2017
	Amortized Cost		Gross Unrecognized Gains		Gross Unrecognized Losses		Fair Value
Mortgage backed securities and collateralized mortgage obligations - residential	$	27,551		1,150		-		28,701
Total held to maturity	$	27,551		1,150		-		28,701

Securities Available for Sale [Member]

Investment [Line Items]

Debt securities based on the securities contractual maturity

The following table distributes the available for sale security portfolio as of March 31, 2018, based on the securities’ final maturity.   Actual maturities may differ because of securities prepayments and the right of certain issuers to call or prepay their obligations without penalty.  Securities not due at a single maturity date are presented separately:

(dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	30,717		30,617
Due in one year through five years		150,597		147,053
Due after five years through ten years		10,094		10,094
Mortgage backed securities and  collateralized mortgage  obligations - residential		307,679		297,633
Small Business Administration-  guaranteed participation securities		66,153		64,113
Mortgage backed securities and  collateralized mortgage  obligations - commercial		9,743		9,573
	$	574,983		559,083

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, 2018
	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	$	59,076		895		82,251		2,639		141,327		3,534
Mortgage backed securities and collateralized mortgage obligations - residential		45,441		1,221		250,721		8,900		296,162		10,121
Corporate bonds		5,218		19		30,008		101		35,227		120
Small Business Administration- guaranteed participation securities		-		-		64,113		2,040		64,113		2,040
Mortgage backed securities and collateralized mortgage obligations - commercial		-		-		9,573		170		9,573		170
Total	$	109,735		2,135		436,666		13,850		546,401		15,985

(dollars in thousands)	December 31, 2017
	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	$	29,734		266		98,090		1,800		127,824		2,066
Mortgage backed securities and collateralized mortgage obligations - residential		48,080		371		266,394		4,344		314,474		4,715
Corporate bonds		-		-		40,162		108		40,162		108
Small Business Administration- guaranteed participation securities		-		-		67,059		1,862		67,059		1,862
Mortgage backed securities and collateralized mortgage obligations - commercial		-		-		9,700		110		9,700		110
Total	$	77,814		637		481,405		8,224		559,219		8,861

Held to Maturity Securities [Member]

Investment [Line Items]

Debt securities based on the securities contractual maturity

The following table distributes the held to maturity portfolio as of March 31, 2018, based on the securities’ final maturity.  Actual maturities may differ because of securities prepayments and the right of certain issuers to call or prepay their obligations without penalty.  Securities not due at a single maturity date are presented separately:

(dollars in thousands)	Amortized Cost		Fair Value
Mortgage backed securities and collateralized mortgage obligations - residential		26,174		26,994
Total held to maturity	$	26,174		26,994

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

(dollars in thousands)	March 31, 2018
	Less than 12 months				12 months or more				Total
	Fair Value		Gross Unrecog. Loss		Fair Value		Gross Unrecog. Loss		Fair Value		Gross Unrecog. Loss
Mortgage backed securities and collateralized mortgage obligations - residential		9,539		62		-		-		9,539		62
Total	$	9,539		62		-		-		9,539		62