Loans and Allowances for Loan Losses (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Beginning balance	$ 223	$ 202	$ 278	$ 180
(Credit) provision for loan losses	30	5	22	25
Charge-offs	44	30	58	35
Recoveries	27	3	38	10
Net charge-offs	(17)	(27)	(20)	(25)
Ending balance	236	180	236	180
Commercial And Industrials [Member]
Beginning balance	85	8	102	7
(Credit) provision for loan losses	(32)	4	(37)	4
Charge-offs	5	(10)	19	10
Recoveries	1	1	3	2
Net charge-offs	(4)	(9)	(16)	(8)
Ending balance	49	3	49	3
Commercial Real Estate [Member]
Beginning balance	101	158	139	155
(Credit) provision for loan losses	97	8	59	11
Charge-offs	(21)	(18)	21	18
Recoveries	8	2	8	2
Net charge-offs	(13)	(16)	(13)	(16)
Ending balance	185	150	185	150
Consumer And Other [Member]
Beginning balance	0	10
(Credit) provision for loan losses	1	0
Charge-offs	(6)	(2)
Recoveries	5	0
Net charge-offs	1	(2)
Ending balance	0	8	0	8
Unallocated [Member]
Beginning balance	33	20
(Credit) provision for loan losses	(33)	(5)
Charge-offs	0	0
Recoveries	0	0
Net charge-offs	0	0
Ending balance	0	15	0	15
Consumer Real Estate [Member]
Beginning balance	4	6
(Credit) provision for loan losses	(3)	(2)
Charge-offs	(12)	0
Recoveries	13	0
Net charge-offs	1	0
Ending balance	$ 2	$ 4	$ 2	$ 4