Stockholders' Equity and Earnings per Common Share, OCI by Component, Anti-Dilutive Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	$ (5,893)	$ (10,802)
Net change for quarter	232	1,678
Balance at end of period	(5,661)	(9,124)
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)	78	151
Unrealized Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(78)	(5,317)
Net change for quarter	91	1,552
Balance at end of period	13	(3,765)
Unrealized Losses on Securities Transferred to Held to Maturity [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(3,386)	(3,937)
Net change for quarter	141	126
Balance at end of period	(3,245)	(3,811)
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(2,429)	(1,548)
Net change for quarter	0	0
Balance at end of period	$ (2,429)	$ (1,548)