Investment Securities (Tables)

9 Months Ended

Sep. 30, 2013

Investment Securities

Schedule of investment securities available-for-sale

	Amortized		Gross		Gross
(Dollars in thousands)	Cost		Unrealized Gains		Unrealized Losses			Fair Value
September 30, 2013
U.S. Treasury and Federal agencies securities	$	394,063	$	5,698	$	(3,468	)	$	396,293
U.S. States and political subdivisions securities	111,843		3,821		(984		)	114,680
Mortgage-backed securities — Federal agencies	280,255		6,277		(2,172		)	284,360
Corporate debt securities	30,890		242		(9		)	31,123
Foreign government and other securities	700		7		—			707
Total debt securities	817,751		16,045		(6,633		)	827,163
Marketable equity securities	2,167		5,021		(3		)	7,185
Total investment securities available-for-sale	$	819,918	$	21,066	$	(6,636	)	$	834,348
December 31, 2012
U.S. Treasury and Federal agencies securities	$	410,983	$	11,353	$	(83	)	$	422,253
U.S. States and political subdivisions securities	100,055		5,864		(482		)	105,437
Mortgage-backed securities — Federal agencies	301,136		11,296		(25		)	312,407
Corporate debt securities	30,897		445		(94		)	31,248
Foreign government and other securities	3,700		26		—			3,726
Total debt securities	846,771		28,984		(684		)	875,071
Marketable equity securities	2,368		3,329		(4		)	5,693
Total investment securities available-for-sale	$	849,139	$	32,313	$	(688	)	$	880,764

Schedule of contractual maturities of investments in debt securities available-for-sale

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	128,276	$	127,885
Due after one year through five years	346,667		352,734
Due after five years through ten years	61,903		61,568
Due after ten years	650		616
Mortgage-backed securities	280,255		284,360
Total debt securities available-for-sale	$	817,751	$	827,163

Schedule of gross realized gains and losses on sale of securities from securities available-for-sale portfolio

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
(Dollars in thousands)	2013			2012		2013			2012
Gross realized gains	$	903		$	—	$	903		$	275
Gross realized losses	(931		)	—		(931		)	—
Net realized (losses) gains	$	(28	)	$	—	$	(28	)	$	275

Schedule of gross unrealized losses and fair value by investment category and age

	Less than 12 Months					12 months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Dollars in thousands)	Value		Losses			Value		Losses			Value		Losses
September 30, 2013
U.S. Treasury and Federal agencies securities	$	139,539	$	(3,337	)	$	15,094	$	(131	)	$	154,633	$	(3,468	)
U.S. States and political subdivisions securities	30,490		(671		)	2,691		(313		)	33,181		(984		)
Mortgage-backed securities - Federal agencies	94,174		(2,171		)	49		(1		)	94,223		(2,172		)
Corporate debt securities	7,900		(3		)	993		(6		)	8,893		(9		)
Foreign government and other securities	100		—			—		—			100		—
Total debt securities	272,203		(6,182		)	18,827		(451		)	291,030		(6,633		)
Marketable equity securities	—		—			4		(3		)	4		(3		)
Total investment securities available-for-sale	$	272,203	$	(6,182	)	$	18,831	$	(454	)	$	291,034	$	(6,636	)
December 31, 2012
U.S. Treasury and Federal agencies securities	$	37,316	$	(83	)	$	—	$	—		$	37,316	$	(83	)
U.S. States and political subdivisions securities	7,730		(46		)	3,364		(436		)	11,094		(482		)
Mortgage-backed securities - Federal agencies	6,264		(24		)	60		(1		)	6,324		(25		)
Corporate debt securities	—		—			4,431		(94		)	4,431		(94		)
Foreign government and other securities	100		—			—		—			100		—
Total debt securities	51,410		(153		)	7,855		(531		)	59,265		(684		)
Marketable equity securities	—		—			5		(4		)	5		(4		)
Total investment securities available-for-sale	$	51,410	$	(153	)	$	7,860	$	(535	)	$	59,270	$	(688	)