Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2017
Changes in Accumulated Other Comprehensive Income (Loss) (Details)
Other Comprehensive Income, Before Tax Amount	$ 8	$ (161)	$ (117)	$ (73)
Other Comprehensive Income, Taxes	(2)	34	25	16
Other Comprehensive Income, Begining Net of Tax Amount	6	(127)	(92)	(57)
Unrealized holding gain arising during period Before tax Amount	18	(32)	143	(120)
Unrealized holding gain arising during period, taxes	(4)	6	(31)	24
Unrealized holding gain arising during period, net of tax amount	14	(26)	112	(96)
Other comprehensive loss, net, before tax amount	18	(32)	143	(120)
Other comprehensive income loss, net, tax (expense) benefit	(4)	6	(31)	24
Other comprehensive income loss, net, net after tax amount	14	(26)	112	(96)
Other Comprehensive Income, Before Tax Amount Ending Before tax amount	26	(193)	26	(193)
Other Comprehensive Income, Ending Taxes	(6)	40	(6)	40
Other Comprehensive Income, Ending Net of Tax Amount	$ 20	$ (153)	$ 20	$ (153)