Stockholders' Equity and Earnings per Common Share, OCI by Component, Anti-Dilutive Securities (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Unrealized Gains (Losses) on Securities [Abstract]
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax			$ (576)	$ (78)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	$ (299)	$ 702	1,877	(209)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	1,301	(287)	1,301	(287)
Other Comprehensive Income -- Available-for-Sale to Held-to-Maturity [Abstract]
Other Comprehensive Income -- Available-for-Sale to Held-to-Maturity Balance			0	(3,386)
Other Comprehensive Income -- Available-for-Sale to Held-to-Maturity Change			0	471
Other Comprehensive Income -- Available-for-Sale to Held-to-Maturity Balance	0	(2,915)	0	(2,915)
Defined Benefit Pension Plans [Abstract]
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax			(2,586)	(2,429)
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	(2,586)	(2,429)	(2,586)	(2,429)
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax			(3,162)	(5,893)
Other Comprehensive Income (Loss), Net of Tax	(299)	862	1,877	262
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (1,285)	$ (5,631)	$ (1,285)	$ (5,631)
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)	67	76	69	77