Securities (Tables)

12 Months Ended

Dec. 31, 2016

Investments Debt And Equity Securities [Abstract]

Schedule of Amortized Cost of Securities and Their Approximate Fair Values

Securities have been classified in the financial statements as available for sale or held to maturity. The amortized cost of securities and their approximate fair values at December 31, 2016 and 2015 are as follows:

			Gross		Gross
(Dollars in thousands)	Amortized		Unrealized		Unrealized			Fair
December 31, 2016	Cost		Gains		Losses			Value
Available for sale securities:
U.S. Government agency obligations	$	180,945	$	640	$	(643	)	$	180,942
Mortgage-backed securities, residential		24,710		453		(173	)		24,990
Asset backed securities		13,031		30		(159	)		12,902
State and municipal		27,339		6		(708	)		26,637
Corporate bonds		27,287		106		(3	)		27,390
SBA pooled securities		156		1		—			157
Mutual fund		2,000		11		—			2,011
Total available for sale securities	$	275,468	$	1,247	$	(1,686	)	$	275,029
			Gross		Gross
(Dollars in thousands)	Amortized		Unrecognized		Unrecognized			Fair
December 31, 2016	Cost		Gains		Losses			Value
Held to maturity securities:
CLO securities	$	29,352	$	1,527	$	(58	)	$	30,821

			Gross		Gross
(Dollars in thousands)	Amortized		Unrealized		Unrealized			Fair
December 31, 2015	Cost		Gains		Losses			Value
Available for sale securities:
U.S. Government agency obligations	$	90,533	$	518	$	(17	)	$	91,034
Mortgage-backed securities, residential		28,006		361		(27	)		28,340
Asset backed securities		17,957		24		(455	)		17,526
State and municipal		1,509		17		—			1,526
Corporate bonds		24,542		74		(57	)		24,559
SBA pooled securities		183		1		—			184
Total available for sale securities	$	162,730	$	995	$	(556	)	$	163,169

Schedule of Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity

The amortized cost and estimated fair value of securities at December 31, 2016, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

	Available for Sale Securities				Held to Maturity Securities
	Amortized		Fair		Amortized		Fair
(Dollars in thousands)	Cost		Value		Cost		Value
Due in one year or less	$	81,164	$	81,173	$	—	$	—
Due from one year to five years		128,643		128,622		—		—
Due from five years to ten years		6,188		6,063		13,234		13,990
Due after ten years		19,576		19,111		16,118		16,831
		235,571		234,969		29,352		30,821
Mortgage-backed securities, residential		24,710		24,990		—		—
Asset backed securities		13,031		12,902		—		—
SBA pooled securities		156		157		—		—
Mutual fund		2,000		2,011		—		—
	$	275,468	$	275,029	$	29,352	$	30,821

Schedule of Proceeds from Sales of Securities and the Associated Gross Gains and Losses

Proceeds from sales of securities and the associated gross gains and losses for the years ended December 31, 2016, 2015, and 2014 are as follows:

(Dollars in thousands)	2016			2015		2014
Proceeds	$	34,338		$	17,635	$	24,424
Gross gains		17			259		98
Gross losses		(73	)		—		(10	)

Schedule of Information Pertaining to Securities with Gross Unrealized Losses

Information pertaining to securities with gross unrealized losses at December 31, 2016 and 2015, aggregated by investment category and length of time that individual securities have been in a continuous loss position, are summarized as follows:

	Less than 12 Months					12 Months or More					Total
(Dollars in thousands)	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
December 31, 2016	Value		Losses			Value		Losses			Value		Losses
Available for sale securities:
U.S. Government agency obligations	$	95,362	$	(643	)	$	—	$	—		$	95,362	$	(643	)
Mortgage-backed securities, residential		6,594		(173	)		—		—			6,594		(173	)
Asset backed securities		—		—			7,946		(159	)		7,946		(159	)
State and municipal		25,771		(708	)		—		—			25,771		(708	)
Corporate bonds		372		(3	)		—		—			372		(3	)
SBA pooled securities		—		—			—		—			—		—
Mutual fund		—		—			—		—			—		—
Total available for sale securities	$	128,099	$	(1,527	)	$	7,946	$	(159	)	$	136,045	$	(1,686	)
	Less than 12 Months					12 Months or More					Total
(Dollars in thousands)	Fair		Unrecognized			Fair		Unrecognized			Fair		Unrecognized
December 31, 2016	Value		Losses			Value		Losses			Value		Losses
Held to maturity securities:
CLO securities	$	3,323	$	(58	)	$	—	$	—		$	3,323	$	(58	)

	Less than 12 Months					12 Months or More					Total
(Dollars in thousands)	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
December 31, 2015	Value		Losses			Value		Losses			Value		Losses
Available for sale securities:
U.S. Government agency obligations	$	10,029	$	(17	)	$	—	$	—		$	10,029	$	(17	)
Mortgage-backed securities, residential		4,948		(27	)		—		—			4,948		(27	)
Asset backed securities		8,031		(416	)		4,605		(39	)		12,636		(455	)
State and municipal		—		—			—		—			—		—
Corporate bonds		10,434		(57	)		—		—			10,434		(57	)
SBA pooled securities		—		—			—		—			—		—
	$	33,442	$	(517	)	$	4,605	$	(39	)	$	38,047	$	(556	)