Securities Available-for-Sale (Tables)

12 Months Ended

Dec. 31, 2013

Investments Debt And Equity Securities [Abstract]

Composition of Securities Available-for-Sale

The following tables present the amortized cost and fair value of available-for-sale securities as of the dates presented:

	December 31, 2013									December 31, 2012
(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Obligations of U.S. government corporations and agencies	$	235,181	$	2,151	$	(2,581	)	$	234,751	$	207,229	$	4,890	$	(53	)	$	212,066
Collateralized mortgage obligations of U.S. government corporations and agencies		63,776		601		(603	)		63,774		56,085		1,811		—			57,896
Residential mortgage-backed securities of U.S. government corporations and agencies		47,934		1,420		(685	)		48,669		47,279		3,344		—			50,623
Commercial mortgage-backed securities of U.S. government corporations and agencies		40,357		—		(1,305	)		39,052		10,129		29		—			10,158
Obligations of states and political subdivisions		115,572		1,294		(2,602	)		114,264		107,911		4,908		(52	)		112,767
Debt Securities		502,820		5,466		(7,776	)		500,510		428,633		14,982		(105	)		443,510
Marketable equity securities		7,579		1,336		—			8,915		7,672		1,095		(11	)		8,756
Total	$	510,399	$	6,802	$	(7,776	)	$	509,425	$	436,305	$	16,077	$	(116	)	$	452,266

Schedule of Gross and Net Realized Gains and Losses on Sale of Securities

The following table shows the composition of gross and net realized gains and losses for the periods presented:

	Years Ended December 31,
(dollars in thousands)	2013		2012
Gross realized gains	$	5	$	3,027
Gross realized losses		—		11
Net Realized Gains	$	5	$	3,016

Fair Value and Age of Gross Unrealized Losses by Investment Category

The following tables present the fair value and the age of gross unrealized losses by investment category as of the dates presented:

	December 31, 2013
	Less Than 12 Months							12 Months or More							Total
(dollars in thousands)	Number of Securities		Fair Value		Unrealized Losses			Number of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Obligations of U.S. government corporations and agencies		16	$	126,017	$	(2,581	)		—	$	—	$	—		$	126,017	$	(2,581	)
Collateralized mortgage obligations of U.S. government corporations and agencies		3		39,522		(603	)		—		—		—			39,522		(603	)
Residential mortgage-backed securities of U.S. government corporations and agencies		2		22,822		(685	)		—		—		—			22,822		(685	)
Commercial mortgage-backed securities of U.S. government corporations and agencies		4		39,052		(1,305	)		—		—		—			39,052		(1,305	)
Obligations of states and political subdivisions		16		47,529		(1,739	)		2		10,088		(863	)		57,617		(2,602	)
Debt Securities		41		274,942		(6,913	)		2		10,088		(863	)		285,030		(7,776	)
Marketable equity securities		—		—		—			—		—		—			—		—
Total Temporarily Impaired Securities		41	$	274,942	$	(6,913	)		2	$	10,088	$	(863	)	$	285,030	$	(7,776	)

	December 31, 2012
	Less Than 12 Months							12 Months or More						Total
(dollars in thousands)	Number of Securities		Fair Value		Unrealized Losses			Number of Securities		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of U.S. government corporations and agencies		2	$	11,370	$	(53	)		—	$	—	$	—	$	11,370	$	(53	)
Collateralized mortgage obligations of U.S. government corporations and agencies		—		—		—			—		—		—		—		—
Residential mortgage-backed securities of U.S. government corporations and agencies		—		—		—			—		—		—		—		—
Commercial mortgage-backed securities of U.S. government corporations and agencies		—		—		—			—		—		—		—		—
Obligations of states and political subdivisions		3		11,285		(52	)		—		—		—		11,285		(52	)
Debt Securities		5		22,655		(105	)		—		—		—		22,655		(105	)
Marketable equity securities		—		228		(11	)		—		—		—		228		(11	)
Total Temporarily Impaired Securities		5	$	22,883	$	(116	)		—	$	—	$	—	$	22,883	$	(116	)

Amortized Cost and Fair Value of Available-for-Sale Securities

The amortized cost and fair value of securities available-for-sale at December 31, 2013, by contractual maturity, are included in the table below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

	December 31, 2013
(dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	27,761	$	27,905
Due after one year through five years		167,914		168,872
Due after five years through ten years		69,364		68,024
Due after ten years		85,714		84,214
		350,753		349,015
Collateralized mortgage obligations of U.S. government corporations and agencies		63,776		63,774
Residential mortgage-backed securities of U.S. government corporations and agencies		47,934		48,669
Commercial mortgage-backed securities of U.S. government corporations and agencies		40,357		39,052
Debt Securities		502,820		500,510
Marketable equity securities		7,579		8,915
Total	$	510,399	$	509,425