Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 9,001	$ 7,786	$ 6,370
Other comprehensive (loss) income:
Changes in benefit obligations and plan assets for post retirement benefit plans, net of reclassification adjustments, net of deferred income tax of $0, ($1) and $0 for the years ended December 31, 2018, 2017, and 2016, respectively	0	(2)	0
Unrealized gain (loss) on available for sale securities, net of reclassification adjustments, net of deferred income tax of ($495), $147, and ($554) for the years ended December 31, 2018, 2017 and 2016, respectively	(1,863)	285	(1,075)
Total other comprehensive (loss) income	(1,863)	283	(1,075)
Total comprehensive income	$ 7,138	$ 8,069	$ 5,295