Securities (Tables)

9 Months Ended

Sep. 30, 2020

Investments debt and equity securities [Abstract]

Available-for-sale Securities [Table Text Block]

			1 year	1 to 5	5 to 10	After 10	Fair	Gross Unrealized		Amortized
(Dollars in thousands)			or less	years	years	years	Value	Gains	Losses	Cost
September 30, 2020
Agency obligations (a)		$	5,011	29,994	55,660	5,389	96,054	3,396	19	$	92,677
Agency RMBS (a)			—	1,302	8,292	145,053	154,647	3,415	285		151,517
State and political subdivisions			96	1,168	6,712	62,245	70,221	3,345	13		66,889
	Total available-for-sale	$	5,107	32,464	70,664	212,687	320,922	10,156	317	$	311,083

December 31, 2019
Agency obligations (a)		$	4,993	27,245	18,470	—	50,708	215	98	$	50,591
Agency RMBS (a)			—	560	4,510	118,207	123,277	798	261		122,740
State and political subdivisions			—	1,355	6,166	54,396	61,917	2,104	9		59,822
	Total available-for-sale	$	4,993	29,160	29,146	172,603	235,902	3,117	368	$	233,153
(a) Includes securities issued by U.S. government agencies or government-sponsored entities.

Available-for-sale Securities, Continuous Unrealized Loss Position [Table Text Block]

			Less than 12 Months		12 Months or Longer			Total
			Fair	Unrealized	Fair	Unrealized		Fair	Unrealized
(Dollars in thousands)			Value	Losses	Value	Losses		Value	Losses
September 30, 2020:
Agency obligations		$	5,013	19	—	—	$	5,013	19
Agency RMBS			30,819	285	—	—		30,819	285
State and political subdivisions			2,868	13	—	—		2,868	13
	Total	$	38,700	317	—	—	$	38,700	317

December 31, 2019:
Agency obligations		$	24,734	97	4,993	1	$	29,727	98
Agency RMBS			40,126	98	21,477	163		61,603	261
State and political subdivisions			2,741	9	—	—		2,741	9
	Total	$	67,601	204	26,470	164	$	94,071	368

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

Realized Gains and Losses
The following table presents the gross realized gains and losses on sales of securities.
			Quarter ended September 30,			Nine months ended September 30,
(Dollars in thousands)			2020	2019		2020	2019
Gross realized gains		$	78	44	$	184	76
Gross realized losses			(62)	—		(81)	(19)
	Realized gains, net	$	16	44	$	103	57