Securities (Tables)

12 Months Ended

Dec. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Summary of Carrying Amount and Fair Value of Securities

The carrying amount of securities and their approximate fair values are reflected in the following table:

	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
December 31, 2015
US government agencies	$	21,992	$	81	$	5	$	22,068
Residential mortgage-backed securities	30,131		1		374		29,758
Mutual fund	1,951		—		15		1,936
Total	$	54,074	$	82	$	394	$	53,762
December 31, 2014
US government agencies	$	35,207	$	127	$	25	$	35,309
Residential mortgage-backed securities	13,973		92		56		14,009
Total	$	49,180	$	219	$	81	$	49,318

Summary of Gross Unrealized Losses and Fair Value

The following tables show gross unrealized losses and fair value, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
December 31, 2015	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
US government agencies	$	7,990	$	5	$	—	$	—	$	7,990	$	5
Residential mortgage-backed securities	26,015		333		3,019		41		29,034		374
Mutual fund	1,936		15		—		—		1,936		15
Total	$	35,941	$	353	$	3,019	$	41	$	38,960	$	394
	Less Than 12 Months				12 Months or More				Total
December 31, 2014	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
US government agencies	$	—	$	—	$	1,224	$	25	$	1,224	$	25
Residential mortgage-backed securities	2,234		4		5,158		52		7,392		56
Total	$	2,234	$	4	$	6,382	$	77	$	8,616	$	81

Summary of Investment Securities by Maturity

The following is a summary of investment securities by maturity:

	Available-for-sale
	Amortized cost		Fair value
US government agencies
Within one year	$	9,214	$	9,225
One to five years	12,778		12,843
Total	21,992		22,068
Residential mortgage-backed securities
Five to ten years	9,566		9,481
After 10 years	20,565		20,277
Total	30,131		29,758
Total	$	52,123	$	51,826