Stockholders' Equity and Earnings per Common Share, OCI by Component, Anti-Dilutive Securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Unrealized Gains (Losses) on Securities [Abstract]
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax			$ (1,739)	$ (576)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	$ 57	$ (299)	1,521	1,877
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(218)	1,301	(218)	1,301
Defined Benefit Pension Plans [Abstract]
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax			(2,469)	(2,586)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax			0	0
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(2,469)	(2,586)	(2,469)	(2,586)
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax			(4,208)	(3,162)
Other Comprehensive Income (Loss), Net of Tax			1,521	1,877
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,687)	(1,285)	(2,687)	(1,285)
Earnings Per Share [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic	757	1,329	2,860	2,902
Net Income (Loss) Available to Common Stockholders, Diluted	$ 757	$ 1,329	$ 2,860	$ 2,902
Weighted Average Number of Shares Issued, Basic	4,993,805	4,959,009	4,985,135	4,959,009
Weighted Average Shares Outstanding	5,003,785	4,959,009	4,997,231	4,959,009
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares	10,000	0	12,000	0
Earnings Per Share, Basic	$ 0.15	$ 0.27	$ 0.57	$ 0.59
Earnings Per Share, Diluted	$ 0.15	$ 0.27	$ 0.57	$ 0.59
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	67,000	0	69,000