Securities (Tables)

12 Months Ended

Dec. 31, 2019

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
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
December 31, 2018
Agency obligations (a)		$	14,437	19,865	16,869	—	51,171	25	1,200	$	52,346
Agency RMBS (a)			—	—	8,368	110,230	118,598	65	3,738	$	122,271
State and political subdivisions			—	3,682	7,726	58,624	70,032	518	692	$	70,206
	Total available-for-sale	$	14,437	23,547	32,963	168,854	239,801	608	5,630	$	244,823
(a) Includes securities issued by U.S. government agencies or government sponsored entities. Expected maturities of
these securities may differ from contractual maturities because issues may have the right to call or repay obligations
with or without prepayment penalties.

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
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

December 31, 2018:
Agency obligations		$	4,724	28	44,307	1,172	49,031	$	1,200
Agency RMBS			12,325	238	99,184	3,500	111,509		3,738
State and political subdivisions			14,840	181	14,384	511	29,224		692
	Total	$	31,889	447	157,875	5,183	189,764	$	5,630

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

Realized Gains and Losses
The following table presents the gross realized gains and losses on sales related to securities.
			Year ended December 31
(Dollars in thousands)			2019	2018
Gross realized gains		$	120	—
Gross realized losses			(243)	—
	Realized losses, net	$	(123)	—