Stockholders' Equity and Earnings per Common Share, OCI by Component, Anti-Dilutive Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period			$ (10,802)	$ (192)
Net change for quarter	596	(3,080)	4,339	(11,303)
Balance at end of period	(6,463)	(11,495)	(6,463)	(11,495)
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)			134	155
Unrealized Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period			(5,317)	1,992
Net change for quarter			3,928	(7,235)
Balance at end of period	(1,389)	(5,243)	(1,389)	(5,243)
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			(3,937)	0
Net change for quarter			411	(4,068)
Balance at end of period	(3,526)	(4,068)	(3,526)	(4,068)
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period			(1,548)	(2,184)
Net change for quarter			0	0
Balance at end of period	$ (1,548)	$ (2,184)	$ (1,548)	$ (2,184)