Other Comprehensive Income (Loss) (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Securities Available For Sale, Beginning balance	$ (2,057)	$ 601
Securities Available For Sale, Other comprehensive income before reclassifications	3,635	(2,810)
Securities Available For Sale, Amounts reclassified from accumulated other comprehensive loss	0
Securities Available For Sale, Net other comprehensive income during period	3,635	(2,810)
Securities Available For Sale, Reclassification adjustment upon adoption of ASU 2018-02		129
Securities Available For Sale, Ending balance	1,578	(2,080)
Post-retirement Benefit, Beginning balance	(91)	(384)
Post-retirement Benefit, Other comprehensive income before reclassifications	0	0
Post-retirement Benefit, Amounts reclassified from accumulated other comprehensive loss	82
Post-retirement Benefit, Net other comprehensive income during period	82	0
Post-retirement Benefit, Reclassification adjustment upon adoption of ASU 2018-02		(82)
Post-retirement Benefit, Ending balance	(9)	(466)
Accumulated Other Comprehensive Income, Beginning balance	(2,148)	217
Accumulated Other Comprehensive Income, Other comprehensive income before reclassifications	3,635	(2,810)
Accumulated Other Comprehensive Income, Amounts reclassified from accumulated other comprehensive loss	82
Accumulated Other Comprehensive Income, Net other comprehensive income during period	3,717	(2,810)
Accumulated Other Comprehensive Income (Loss), Reclassification adjustment upon adoption of ASU 2018-02		47
Accumulated Other Comprehensive Income, Ending balance	$ 1,569	$ (2,546)