Stockholders' Equity and Earnings per Common Share, OCI by Component, Anti-Dilutive Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period			$ (10,802)	$ (192)
Net change for quarter	2,065	(6,497)	3,743	(8,223)
Balance at end of period	(7,059)	(8,415)	(7,059)	(8,415)
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)			151	156
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			3,484	(8,223)
Balance at end of period	(1,833)	(6,231)	(1,833)	(6,231)
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			259	0
Balance at end of period	(3,678)	0	(3,678)	0
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)