Securities (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Security	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Security	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) Security
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 145,643		$ 145,643		$ 150,976
Gross unrealized gains	1,429		1,429		298
Gross unrealized losses	(586)		(586)		(3,027)
Fair value	146,486		146,486		148,247
Securities Available-for-sale [Abstract]
Realized gains on sales of securities	479	$ 0	515	$ 131
Realized losses on sales of securities	(193)	0	(203)	(11)
Net realized gain	286	$ 0	312	$ 120
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	354		354		59
More Than Twelve Months	232		232		2,968
Total	586		586		3,027
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	52,188		52,188		14,427
More Than Twelve Months	25,350		25,350		91,252
Total	$ 77,538		$ 77,538		$ 105,679
Unrealized loss position, Number of securities | Security	35		35		88
U.S. Treasury Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 9,905		$ 9,905		$ 12,323
Gross unrealized gains	82		82		6
Gross unrealized losses	0		0		(1)
Fair value	9,987		9,987		12,328
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months					1
More Than Twelve Months					0
Total					1
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months					2,484
More Than Twelve Months					0
Total					2,484
Obligations of U.S. Government Agencies [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	28,401		28,401		10,868
Gross unrealized gains	14		14		2
Gross unrealized losses	(138)		(138)		(156)
Fair value	28,277		28,277		10,714
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	88		88		47
More Than Twelve Months	50		50		109
Total	138		138		156
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	20,068		20,068		6,014
More Than Twelve Months	2,872		2,872		3,206
Total	22,940		22,940		9,220
Obligations of States and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	24,519		24,519		49,194
Gross unrealized gains	557		557		155
Gross unrealized losses	(69)		(69)		(512)
Fair value	25,007		25,007		48,837
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	69		69		10
More Than Twelve Months	0		0		502
Total	69		69		512
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	3,191		3,191		5,829
More Than Twelve Months	0		0		23,727
Total	3,191		3,191		29,556
Mortgage-backed Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	75,455		75,455		73,444
Gross unrealized gains	686		686		93
Gross unrealized losses	(376)		(376)		(2,346)
Fair value	75,765		75,765		71,191
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	197		197		0
More Than Twelve Months	179		179		2,346
Total	376		376		2,346
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	28,929		28,929		0
More Than Twelve Months	22,281		22,281		63,930
Total	51,210		51,210		63,930
Money Market Investments [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	3,821		3,821		1,897
Gross unrealized gains	0		0		0
Gross unrealized losses	0		0		0
Fair value	3,821		3,821		1,897
Corporate Bonds and Other Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	3,542		3,542		3,250
Gross unrealized gains	90		90		42
Gross unrealized losses	(3)		(3)		(12)
Fair value	3,629		3,629		3,280
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	0		0		1
More Than Twelve Months	3		3		11
Total	3		3		12
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	0		0		100
More Than Twelve Months	197		197		389
Total	$ 197		$ 197		$ 489