Investment Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investment Securities [Abstract]

Amortized cost, unrealized gains and losses and estimated fair values of investments in debt and other securities

The amortized cost, unrealized gains and losses and estimated fair values of investments in debt and other securities at December 31, 2014 are summarized as follows:

	Amortized cost		Unrealized gains		Unrealized losses			Estimated fair value
Investment securities available-for-sale:
Securities of U.S. government agencies and corporations	$	28,787	$	17	$	(375	)	$	28,429
Obligations of states and political subdivisions		20,236		579		(52	)		20,763
Collateralized mortgage obligations		12,541		37		(25	)		12,553
Mortgage-backed securities		88,491		1,144		(154	)		89,481
Total debt securities	$	150,055	$	1,777	$	(606	)	$	151,226

The amortized cost, unrealized gains and losses and estimated fair values of investments in debt and other securities at December 31, 2013 are summarized as follows:

	Amortized cost		Unrealized gains		Unrealized losses			Estimated fair value
Investment securities available-for-sale:
Securities of U.S. government agencies and corporations	$	53,960	$	8	$	(1,283	)	$	52,685
Obligations of states and political subdivisions		27,528		409		(550	)		27,387
Collateralized mortgage obligations		5,359		46		—			5,405
Mortgage-backed securities		87,486		718		(412	)		87,792
Total debt securities	$	174,333	$	1,181	$	(2,245	)	$	173,269

Amortized cost and estimated fair value of debt and other securities by contractual maturity

The amortized cost and estimated fair value of debt and other securities at December 31, 2014, by contractual maturity, are shown in the following table:

	Amortized cost		Estimated fair value
Due in one year or less	$	1,164	$	1,168
Due after one year through five years		126,172		126,918
Due after five years through ten years		20,783		21,070
Due after ten years		1,936		2,070
	$	150,055	$	151,226

Analysis of gross unrealized losses of the available-for-sale investment securities portfolio

An analysis of gross unrealized losses of the available-for-sale investment securities portfolio as of December 31, 2014, follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized losses			Fair Value		Unrealized losses			Fair Value		Unrealized losses
Securities of U.S. government agencies and corporations	$	1,474	$	(4	)	$	21,729	$	(371	)	$	23,203	$	(375	)
Obligations of states and political subdivisions		1,927		(28	)		1,530		(24	)		3,457		(52	)
Collateralized mortgage obligations		2,881		(25	)		—		—			2,881		(25	)
Mortgage-backed securities		9,786		(55	)		9,128		(99	)		18,914		(154	)
Total	$	16,068	$	(112	)	$	32,387	$	(494	)	$	48,455	$	(606	)

An analysis of gross unrealized losses of the available-for-sale investment securities portfolio as of December 31, 2013, follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized losses			Fair Value		Unrealized losses			Fair Value		Unrealized losses
Obligations of states and political subdivisions	$	46,654	$	(1,283	)	$	—	$	—		$	46,654		(1,283	)
Collateralized mortgage obligations		11,871		(550	)		—		—			11,871		(550	)
Mortgage-backed securities		19,155		(243	)		6,932		(169	)		26,087		(412	)
Total	$	77,680	$	(2,076	)	$	6,932	$	(169	)	$	84,612	$	(2,245	)