Stockholders' Equity and Earnings per Common Share, OCI by Component, Anti-Dilutive Securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 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	$ 1,036	$ 1,661	1,464	2,176
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(275)	1,600	(275)	1,600
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			1,464	2,176
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,744)	(986)	(2,744)	(986)
Earnings Per Share [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic	1,161	552	2,103	1,573
Net Income (Loss) Available to Common Stockholders, Diluted	$ 1,161	$ 552	$ 2,103	$ 1,573
Weighted Average Number of Shares Issued, Basic	4,984,151,000	4,959,009,000	4,980,728,000	4,959,009,000
Diluted earnings per share	4,996,880	4,959,009	4,993,916	4,959,009
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares	13,000	0	13,000	0
Earnings Per Share, Basic	$ 0.23	$ 0.11	$ 0.42	$ 0.32
Earnings Per Share, Diluted	$ 0.23	$ 0.11	$ 0.42	$ 0.32
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	69,000	0	69,000