Securities (Tables)

6 Months Ended

Jun. 30, 2016

Investments, Debt and Equity Securities [Abstract]

Amortized costs and fair values of held to maturity securities

Amortized costs and fair values of securities held to maturity are summarized as follows.

	June 30, 2016
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Held to Maturity
Obligations of states and political subdivisions	$	6,477	$	253	$	—	$	6,730
Corporate securities	4,250		100		—		4,350
Total	$	10,727	$	353	$	—	$	11,080

	December 31, 2015
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held to Maturity
Obligations of states and political subdivisions	$	1,457	$	—	$	(38	)	$	1,419
Corporate securities	2,750		24		(30		)	2,744
Total	$	4,207	$	24	$	(68	)	$	4,163

The amortized cost and fair value of securities held to maturity as of June 30, 2016, by contractual maturity are shown below. 

	June 30, 2016
(Dollars in thousands)	Amortized Cost		Fair Value
Held to Maturity
Due after five years through ten years	$	4,250	$	4,350
Due after ten years	6,477		6,730
Total	$	10,727	$	11,080

Amortized costs and fair values of securities available for sale

Amortized costs and fair values of securities available for sale are summarized as follows:

	June 30, 2016
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for Sale
U.S. government agencies	$	65,442	$	1,216	$	(127	)	$	66,531
Obligations of states and political subdivisions	67,664		2,420		(89		)	69,995
Mortgage-backed securities:
Agency	123,514		3,826		(550		)	126,790
Non-agency	13,306		131		(40		)	13,397
Other asset backed securities	54,725		525		(744		)	54,506
Corporate securities	16,606		59		(701		)	15,964
Total	$	341,257	$	8,177	$	(2,251	)	$	347,183

	December 31, 2015
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for Sale
U.S. government agencies	$	79,005	$	315	$	(380	)	$	78,940
Obligations of states and political subdivisions	74,071		1,956		(434		)	75,593
Mortgage-backed securities:
Agency	129,360		3,046		(745		)	131,661
Non-agency	12,782		33		(38		)	12,777
Other asset backed securities	58,958		426		(603		)	58,781
Corporate securities	17,557		22		(760		)	16,819
Total	$	371,733	$	5,798	$	(2,960	)	$	374,571

Amortized cost and fair value of securities available for sale by contractual maturity

The amortized cost and fair value of securities available for sale as of June 30, 2016, by contractual maturity are shown below.  Maturities may differ from contractual maturities in corporate and mortgage-backed securities because the securities and mortgages underlying the securities may be called or repaid without any penalties.  Therefore, these securities are not included in the maturity categories in the following maturity summary.

	June 30, 2016
(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	487	$	487
Due after one year through five years	9,421		9,675
Due after five years through ten years	24,463		24,403
Due after ten years	115,341		117,925
Mortgage-backed securities	136,820		140,187
Other asset backed securities	54,725		54,506
Total	$	341,257	$	347,183

Investments in an unrealized loss position

Investments in an unrealized loss position that are temporarily impaired are as follows:

(Dollars in thousands)	Less than Twelve Months					Twelve Months or Greater					Total
June 30, 2016	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Available for Sale
U.S. government agencies	$	11,883	$	(112	)	$	1,633	$	(15	)	$	13,516	$	(127	)
Obligations of states and political subdivisions	205		—			7,779		(89		)	7,984		(89		)
Mortgage-backed securities:
Agency	12,138		(130		)	11,448		(420		)	23,586		(550		)
Non-agency	326		—			1,910		(40		)	2,236		(40		)
Other asset backed securities	19,390		(427		)	18,049		(317		)	37,439		(744		)
Corporate securities	1,954		(46		)	11,654		(655		)	13,608		(701		)
Total	$	45,896	$	(715	)	$	52,473	$	(1,536	)	$	98,369	$	(2,251	)

(Dollars in thousands)	Less than Twelve Months					Twelve Months or Greater					Total
December 31, 2015	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Held to Maturity
Obligations of states and political subdivisions	$	1,419	$	(38	)	$	—	$	—		$	1,419	$	(38	)
Corporate securities	1,970		(30		)	—		—			1,970		(30		)
Total	$	3,389	$	(68	)	$	—	$	—		$	3,389	$	(68	)
Available for Sale
U.S. government agencies	$	46,000	$	(304	)	$	4,223	$	(76	)	$	50,223	$	(380	)
Obligations of states and political subdivisions	16,559		(324		)	1,082		(110		)	17,641		(434		)
Mortgage-backed securities:
Agency	27,627		(402		)	9,911		(343		)	37,538		(745		)
Non-agency	7,842		(37		)	671		(1		)	8,513		(38		)
Other asset backed securities	25,399		(276		)	12,037		(327		)	37,436		(603		)
Corporate securities	10,740		(378		)	4,866		(382		)	15,606		(760		)
Total	$	134,167	$	(1,721	)	$	32,790	$	(1,239	)	$	166,957	$	(2,960	)