Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,227	$ 955	$ 3,292	$ 3,326
Securities available for sale:
Unrealized holding gains (losses) on available-for-sale securities	967	154	(121)	4,641
Tax effect	(328)	(52)	41	(1,578)
Reclassification adjustment for net losses (gains) realized in net income	3	(4)	3	(197)
Tax effect	(1)	1	(1)	67
Total securities available for sale	641	99	(78)	2,933
Change in post-retirement obligations	(23)	14	(68)	40
Total other comprehensive income (loss)	618	113	(146)	2,973
Total comprehensive income	$ 1,845	$ 1,068	$ 3,146	$ 6,299