Securities Available-for-Sale (Tables)

12 Months Ended

Dec. 31, 2016

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Summary of Securities Available-for-Sale

	December 31, 2016								December 31, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
(dollars in thousands)
U.S. Treasury	$	2,000	$	—	$	—	$	2,000	$	1,999	$	—	$	10	$	1,989
U.S. Government Sponsored Enterprises		25,000		—		48		24,952		—		—		—		—
SBA Backed Securities		57,899		14		146		57,767		5,983		8		2		5,989
U.S. Government Agency and Sponsored Enterprises Mortgage-Backed Securities		243,703		293		671		243,325		232,967		859		300		233,526
Privately Issued Residential Mortgage-Backed Securities		1,121		2		14		1,109		1,437		10		13		1,434
Obligations Issued by States and Political Subdivisions		165,281		—		405		164,876		157,838		—		878		156,960
Other Debt Securities		5,100		18		194		4,924		4,600		3		130		4,473
Equity Securities		116		228		—		344		153		99		—		252
Total	$	500,220	$	555	$	1,478	$	499,297	$	404,977	$	979	$	1,333	$	404,623

Estimated Maturity Distribution of Securities Available-for-Sale

The following table shows the estimated maturity distribution of the Company’s securities available-for-sale at December 31, 2016.

	Amortized Cost		Fair Value
(dollars in thousands)
Within one year	$	173,276	$	173,263
After one but within five years		107,005		106,782
After five but within ten years		168,698		168,347
More than ten years		49,625		49,207
Nonmaturing		1,616		1,698
Total	$	500,220	$	499,297

Continuous Unrealized Loss Position for 12 Months or Less and 12 Months and Longer

The following table shows the temporarily impaired securities of the Company’s available-for-sale portfolio at December 31, 2016. This table shows the unrealized market loss of securities that have been in a continuous unrealized loss position for 12 months or less and a continuous loss position for 12 months and longer. There are 49 and 15 securities that are temporarily impaired for less than 12 months and for 12 months or longer, respectively, out of a total of 270 holdings at December 31, 2016.

	December 31, 2016
	Less Than 12 Months				12 Months or Longer				Total
Temporarily Impaired Investments	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
(dollars in thousands)
U.S. Treasury	$	—	$	—	$	—	$	—	$	—	$	—
U.S. Government Sponsored Enterprises		24,952		48		—		—		24,952		48
SBA Backed Securities		52,346		145		951		1		53,297		146
U.S. Government Agency and Sponsored Enterprise Mortgage-Backed Securities		135,612		485		31,504		186		167,116		671
Privately Issued Residential Mortgage-Backed Securities		—		—		757		14		757		14
Obligations Issued by States and Political Subdivisions		—		—		4,298		405		4,298		405
Other Debt Securities		453		47		1,553		147		2,006		194
Total temporarily impaired securities	$	213,363	$	725	$	39,063	$	753	$	252,426	$	1,478

The following table shows the temporarily impaired securities of the Company’s available-for-sale portfolio at December 31, 2015. This table shows the unrealized market loss of securities that have been in a continuous unrealized loss position for 12 months or less and a continuous loss position for 12 months and longer. There are 14 and 11 securities that are temporarily impaired for less than 12 months and for 12 months or longer, respectively, out of a total of 290 holdings at December 31, 2015.

	December 31, 2015
	Less Than 12 Months				12 Months or Longer				Total
Temporarily Impaired Investments	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
(dollars in thousands)
U.S. Treasury	$	1,989	$	10	$	—	$	—	$	1,989	$	10
SBA Backed Securities		1,031		2		—		—		1,031		2
U.S. Government Agency and Sponsored Enterprise Mortgage-Backed Securities		26,519		52		49,341		248		75,860		300
Privately Issued Residential Mortgage-Backed Securities		—		—		490		13		490		13
Obligations Issued by States and Political Subdivisions		—		—		3,820		878		3,820		878
Other Debt Securities		497		3		1,373		127		1,870		130
Total temporarily impaired securities	$	30,036	$	67	$	55,024	$	1,266	$	85,060	$	1,333