Securities (Tables)

6 Months Ended

Jun. 30, 2016

Securities

Schedule of amortized cost and estimated fair value of securities

June 30, 2016	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
Securities available-for-sale:
Agency mortgage-backed securities	$	366,690	$	6,770	$	—		$	373,460
Trust preferred securities		15,000		938		—			15,938
Corporate bonds		996		41		—			1,037
Total	$	382,686	$	7,749	$	—		$	390,435
Securities held-to-maturity:
Agency mortgage-backed securities	$	118,779	$	1,262	$	(9	)	$	120,032
Municipals—exempt from Federal tax		91,391		3,242		(41	)		94,592
Total	$	210,170	$	4,504	$	(50	)	$	214,624

December 31, 2015	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
Securities available-for-sale:
Agency mortgage-backed securities	$	324,077	$	2,457	$	(2,304	)	$	324,230
U.S. Treasury		30,047		—		(44	)		30,003
Trust preferred securities		15,000		132		—			15,132
U.S. Government sponsored entities		9,042		13		(14	)		9,041
Corporate bonds		6,412		261		—			6,673
Total	$	384,578	$	2,863	$	(2,362	)	$	385,079
Securities held-to-maturity:
Municipals—exempt from Federal tax	$	93,518	$	1,517	$	(863	)	$	94,172
Agency mortgage-backed securities		15,793		24		(168	)		15,649
Total	$	109,311	$	1,541	$	(1,031	)	$	109,821

Schedule of securities with unrealized losses

	Less Than 12 Months					12 Months or More					Total
June 30, 2016	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(Dollars in thousands)
Securities held-to-maturity:
Agency mortgage-backed securities	$	763	$	(1	)	$	2,137	$	(8	)	$	2,900	$	(9	)
Municipals—exempt from Federal tax		—		—			2,224		(41	)		2,224		(41	)
Total	$	763	$	(1	)	$	4,361	$	(49	)	$	5,124	$	(50	)

	Less Than 12 Months					12 Months or More					Total
December 31, 2015	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)
	(Dollars in thousands)
Securities available-for-sale:
Agency mortgage-backed securities	$	241,067	$	(2,258	)	$	2,165	$	(46	)	$	243,232	$	(2,304	)
U.S. Treasury		30,003		(44	)		—		—			30,003		(44	)
U.S. Government sponsored entities		4,980		(14	)		—		—			4,980		(14	)
Total	$	276,050	$	(2,316	)	$	2,165	$	(46	)	$	278,215	$	(2,362	)
Securities held-to-maturity:
Municipals—exempt from Federal tax	$	9,920	$	(78	)	$	24,412	$	(785	)	$	34,332	$	(863	)
Agency mortgage-backed securities		7,152		(89	)		4,409		(79	)		11,561		(168	)
Total	$	17,072	$	(167	)	$	28,821	$	(864	)	$	45,893	$	(1,031	)

Schedule of proceeds from sales of securities and the resulting gains and losses

	Three Months Ended June 30,					Six Months Ended June 30,
	2016			2015		2016			2015
	(Dollars in thousands)
Proceeds	$	43,573		$	—	$	49,171		$	—
Gross gains		364			—		544			—
Gross losses		(17	)		—		(17	)		—

Schedule of amortized cost and estimated fair values of securities, by contractual maturity

	Available-for-sale
	Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Due after one through five years	$	996	$	1,037
Due after ten years		15,000		15,938
Agency mortgage-backed securities		366,690		373,460
Total	$	382,686	$	390,435

	Held-to-maturity
	Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Due 3 months or less	$	498	$	499
Due after 3 months through one year		503		506
Due after one through five years		4,721		4,815
Due after five through ten years		14,970		15,941
Due after ten years		70,699		72,831
Agency mortgage-backed securities		118,779		120,032
Total	$	210,170	$	214,624