Investment Securities (Tables)

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Available-for-sale and held-to-maturity securities [Table Text Block]

Investment securities as of the balance sheet dates consisted of the following:

December 31, 2016	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(Dollars in thousands)
Available-for-sale
Debt securities:
U.S. Government-sponsored enterprises	$	10,221	$	15	$	(196	)	$	10,040
Agency MBS	18,283		27		(269		)	18,041
State and political subdivisions	27,909		113		(650		)	27,372
Corporate	9,745		84		(129		)	9,700
Total debt securities	66,158		239		(1,244		)	65,153
Mutual funds	403		—		—			403
Total	$	66,561	$	239	$	(1,244	)	$	65,556
Held-to-maturity
U.S. Government-sponsored enterprises	$	999	$	—	$	—		$	999

December 31, 2015	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(Dollars in thousands)
Available-for-sale
Debt securities:
U.S. Government-sponsored enterprises	$	10,805	$	30	$	(143	)	$	10,692
Agency MBS	11,083		39		(64		)	11,058
State and political subdivisions	19,653		404		(25		)	20,032
Corporate	12,266		76		(359		)	11,983
Total debt securities	53,807		549		(591		)	53,765
Mutual funds	345		—		—			345
Total	$	54,152	$	549	$	(591	)	$	54,110
Held-to-maturity
U.S. Government-sponsored enterprises	$	5,217	$	—	$	(101	)	$	5,116

Schedule of Unrealized Loss on Investments [Table Text Block]

Information pertaining to all investment securities with gross unrealized losses as of the balance sheet dates, aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows:

December 31, 2016	Less Than 12 Months						12 Months and Over						Total
	Number of Securities	Fair Value		Gross Unrealized Loss			Number of Securities	Fair Value		Gross Unrealized Loss			Number of Securities	Fair Value		Gross Unrealized Loss
		(Dollars in thousands)
Debt securities:
U.S. Government-   sponsored enterprises	13	$	8,351	$	(180	)	3	$	1,172	$	(16	)	16	$	9,523	$	(196	)
Agency MBS	22	15,141		(261		)	1	344		(8		)	23	15,485		(269		)
State and political   subdivisions	40	16,481		(650		)	—	—		—			40	16,481		(650		)
Corporate	8	3,973		(56		)	4	1,627		(73		)	12	5,600		(129		)
Total	83	$	43,946	$	(1,147	)	8	$	3,143	$	(97	)	91	$	47,089	$	(1,244	)

December 31, 2015	Less Than 12 Months						12 Months and Over						Total
	Number of Securities	Fair Value		Gross Unrealized Loss			Number of Securities	Fair Value		Gross Unrealized Loss			Number of Securities	Fair Value		Gross Unrealized Loss
		(Dollars in thousands)
Debt securities:
U.S. Government-   sponsored enterprises	12	$	9,081	$	(157	)	5	$	3,607	$	(87	)	17	$	12,688	$	(244	)
Agency MBS	12	7,459		(58		)	1	259		(6		)	13	7,718		(64		)
State and political   subdivisions	4	1,512		(14		)	2	785		(11		)	6	2,297		(25		)
Corporate	12	5,750		(277		)	4	1,632		(82		)	16	7,382		(359		)
Total	40	$	23,802	$	(506	)	12	$	6,283	$	(186	)	52	$	30,085	$	(692	)

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

The following table presents the proceeds, gross gains and gross losses from sales of available-for-sale securities:

	For The Years Ended December 31,
	2016			2015			2014
	(Dollars in thousands)
Proceeds	$	6,620		$	11,540		$	7,420
Gross gains	131			66			393
Gross losses	(60		)	(13		)	(78		)
Net gains	$	71		$	53		$	315

Investments Classified by Contractual Maturity Date [Table Text Block]

The amortized cost and estimated fair value of debt securities by contractual scheduled maturity as of December 31, 2016, were as follows:

	Amortized Cost		Fair Value
	(Dollars in thousands)
Available-for-sale
Due in one year or less	$	627	$	631
Due from one to five years	5,834		5,882
Due from five to ten years	24,063		23,768
Due after ten years	17,351		16,831
	47,875		47,112
Agency MBS	18,283		18,041
Total debt securities available-for-sale	$	66,158	$	65,153
Held-to-maturity
Due from one to five years	$	999	$	999
Total debt securities held-to-maturity	$	999	$	999