Investment Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Investments [Table Text Block]

The following tables present information related to the Company’s portfolio of securities available-for-sale and held-to-maturity at December 31, 2015 and 2014.

			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	December 31, 2015
	(dollars in thousands)
Investment securities available-for-sale:
Federal agency obligations	$	29,062	$	142	$	(58)	$	29,146
Residential mortgage pass-through securities		44,155		803		(48)		44,910
Commercial mortgage pass-through securities		2,981		-		(9)		2,972
Obligations of U.S. states and political subdivisions		8,188		169		-		8,357
Trust preferred securities		16,088		398		(231)		16,255
Corporate bonds and notes		53,566		702		(292)		53,976
Asset-backed securities		20,005		18		(298)		19,725
Certificates of deposit		1,895		18		(8)		1,905
Equity securities		376		21		(23)		374
Other securities		18,303		-		(153)		18,150
Total securities available-for-sale	$	194,619	$	2,271	$	(1,120)	$	195,770
			Gross		Gross
	Amortized		Unrecognized		Unrecognized		Fair
	Cost		Gains		Losses		Value
Investment securities held-to-maturity:
U.S. Treasury and agency securities	$	28,471	$	755	$	-	$	29,226
Federal agency obligations		33,616		280		(119)		33,777
Residential mortgage-backed securities		3,805		11		(6)		3,810
Commercial mortgage-backed securities		4,110		27		(2)		4,135
Obligations of U.S. states and political subdivisions		118,015		5,001		(3)		123,013
Corporate bonds and notes		36,039		719		(161)		36,597
Total securities held-to-maturity	$	224,056	$	6,793	$	(291)	$	230,558

			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	December 31, 2014
	(dollars in thousands)
Investment Securities Available-for-Sale:
Federal agency obligations	$	32,650	$	217	$	(50)	$	32,817
Residential mortgage pass-through securities		58,836		1,531		(11)		60,356
Commercial mortgage pass-through securities		3,042		4		-		3,046
Obligations of U.S. states and political subdivisions		8,201		205		-		8,406
Trust preferred securities		16,086		489		(269)		16,306
Corporate bonds and notes		119,838		5,950		(11)		125,777
Asset-backed securities		27,393		140		(31)		27,502
Certificates of deposit		2,098		27		(2)		2,123
Equity securities		376		-		(69)		307
Other securities		12,941		33		(82)		12,892
Total securities available-for-sale	$	281,461	$	8,596	$	(525)	$	289,532
			Gross		Gross
	Amortized		Unrecognized		Unrecognized		Fair
	Cost		Gains		Losses		Value
Investment securities held-to-maturity:
U.S. Treasury and agency securities	$	28,264	$	920	$	-	$	29,184
Federal agency obligations		27,103		322		(28)		27,397
Residential mortgage-backed securities		5,955		28		-		5,983
Commercial mortgage-backed securities		4,266		50		-		4,316
Obligations of U.S. states and political subdivisions		120,144		4,512		(60)		124,596
Corporate bonds and notes		38,950		1,026		(7)		39,969
Total securities held-to-maturity	$	224,682	$	6,858	$	(95)	$	231,445

Investments Classified by Contractual Maturity Date [Table Text Block]

The following table presents information for investments in securities available-for-sale and held-to-maturity at December 31, 2015, based on scheduled maturities. Actual maturities can be expected to differ from scheduled maturities due to prepayment or early call options of the issuer. Securities not due at a single maturity date are shown separately.

	December 31, 2015
	Amortized		Fair
	Cost		Value
	(dollars in thousands)
Investment Securities Available-for-Sale:
Due in one year or less	$	13,543	$	13,587
Due after one year through five years		21,730		22,137
Due after five years through ten years		44,371		44,391
Due after ten years		49,160		49,249
Residential mortgage pass-through securities		44,155		44,910
Commercial mortgage pass-through securities		2,981		2,972
Equity securities		376		374
Other securities		18,303		18,150
Total	$	194,619	$	195,770
Investment Securities Held-to-Maturity:
Due in one year or less	$	1,000	$	998
Due after one year through five years		13,123		13,380
Due after five years through ten years		80,274		82,739
Due after ten years		121,744		125,496
Residential mortgage-backed securities		3,805		3,810
Commercial mortgage-backed securities		4,110		4,135
Total	$	224,056	$	230,558
Total investment securities	$	418,675	$	426,328

Schedule of Realized Gain (Loss) [Table Text Block]

Gross gains and losses from the sales, calls, and maturities of investment securities for the years ended December 31, 2015, 2014 and 2013 were as follows:

	Years Ended December 31,
(dollars in thousands)	2015		2014		2013
Proceeds	$	65,231	$	81,844	$	122,165
Gross gains on sales of investment securities	$	3,931	$	2,837	$	2,451
Gross losses on sales of investment securities		-		19		88
Net gains on sales of investment securities		3,931		2,818		2,363
Less: tax provision on net gains	(1,376)			(986)		(645)
Net gains on sales of investment securities	$	2,555	$	1,832	$	1,718

Schedule of OTTI Charges for period

Summary of Other-than-Temporary Impairment Charges

	Years Ended December 31,
	2015		2014		2013
	(dollars in thousands)
Pooled trust preferred securities	$	-	$	-	$	628
Principal losses on a variable rate CMO		-		-		24
Total other-than-temporary impairment charges	$	-	$	-	$	652

Schedule of Unrealized Loss on Investments [Table Text Block]

The following tables indicate gross unrealized losses not recognized in income and fair value, aggregated by investment category and the length of time individual securities have been in a continuous unrealized loss position at December 31, 2015 and 2014:

	December 31, 2015
	Total				Less than 12 Months				12 Months or Longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
	(dollars in thousands)
Investment Securities
Available-for-Sale:
Federal agency obligation	$	12,260	$	(58)	$	12,013	$	(54)	$	247	$	(4)
Residential mortgage
pass-through securities		9,027		(48)		9,027		(48)		—		—
Commercial mortgage-backed
securities		2,971		(9)		2,971		(9)		—		—
Trust preferred securities		1,345		(231)		—		—		1,345		(231)
Corporate bonds and notes		16,533		(292)		12,702		(161)		3,831		(131)
Asset-backed securities		14,745		(298)		11,250		(188)		3,495		(110)
Certificates of deposit		215		(8)		215		(8)		—		—
Equity securities		123		(23)		—		—		123		(23)
Other securities		5,347		(153)		—		—		5,347		(153)
Total	$	62,566	$	(1,120)	$	48,178	$	(468)	$	14,388	$	(652)
Investment Securities
Held-to-Maturity:
Federal agency obligation		12,554		(119)		11,783		(109)		771		(10)
Residential mortgage
pass-through securities		2,480		(6)		2,480		(6)		—		—
Commercial mortgage-backed
securities		1,331		(2)		1,331		(2)		—		—
Obligations of U.S. states
and political subdivisions		981		(3)		981		(3)		—		—
Corporate bonds and notes		5,536		(161)		5,536		(161)		—		—
Total		22,882		(291)		22,111		(281)		771		(10)
Total Temporarily Impaired
Securities	$	85,448	$	(1,411)	$	70,289	$	(749)	$	15,159	$	(662)

	December 31, 2014
	Total				Less than 12 Months				12 Months or Longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
	(dollars in thousands)
Investment Securities
Available-for-Sale:
Federal agency obligation	$	6,755	$	(50)	$	2,770	$	(9)	$	3,985	$	(41)
Residential mortgage
pass-through securities		5,694		(11)		5,694		(11)		—		—
Trust preferred securities		1,307		(269)		—		—		1,307		(269)
Corporate bonds and notes		1,961		(11)		1,961		(11)		—		—
Asset-backed securities		9,773		(31)		9,773		(31)		—		—
Certificates of deposit		369		(2)		369		(2)		—		—
Equity securities		307		(69)		—		—		307		(69)
Other securities		5,417		(82)		1,978		(21)		3,439		(61)
Total	$	31,583	$	(525)	$	22,545	$	(85)	$	9,038	$	(440)
Investment Securities
Held-to-Maturity:
Federal agency obligation		3,228		(28)		3,228		(28)		—		—
Obligations of U.S. states
and political subdivisions		8,341		(60)		1,401		(3)		6,940		(57)
Corporate bonds and notes		993		(7)		993		(7)		—		—
Total		12,562		(95)		5,622		(38)		6,940		(57)
Total Temporarily Impaired
Securities	$	44,145	$	(620)	$	28,167	$	(123)	$	15,978	$	(497)