Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement Of Income and Comprehensive Income [Abstract]
Net Income		$ 240	$ 110	$ 251	$ 187
Unrealized holding gains on available-for-sale securities
Unrealized holding gains arising during the period		14	24	29	120
Net unrealized gain on available for sale securities		14	24	29	120
Accretion of net unrealized loss on securities transferred to held-to-maturity	[1]		76		255
Other comprehensive income, before tax		14	100	29	375
Tax effect		5	34	10	133
Other comprehensive income, net of tax		9	66	19	242
Comprehensive income		249	176	270	429
Tax Effect Allocated to Each Component of Other Comprehensive Income
Unrealized holding gains (losses) arising during the period		(5)	(8)	(10)	(41)
Accretion of net unrealized loss on securities transferred to held-to-maturity			(26)		(92)
Income tax effect related to other comprehensive income (loss)		$ (5)	$ (34)	$ (10)	$ (133)

[1] The accretion of the unrealized holding losses in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and the fair value of the investment securities at the date of transfer, and is an adjustment of yield.