Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Unrealized gains (losses) on investment securities [Abstract]
Unrealized holding losses arising during period, before tax					$ (8,833)		$ 1,440
Less adjustment for impaired investments, before tax							(859)
Less reclassification adjustment for gains realized in net loss, before tax					69		384
Unrealized gains (losses) on investment securities, before tax					(8,902)		1,915
Unrecognized benefit obligation expense [Abstract]
Less reclassification adjustment for amortization, before tax					(429)		(354)
Other comprehensive income (loss), net, before tax					(8,473)		2,269
Unrealized gains (losses) on investment securities [Abstract]
Unrealized holding losses arising during period, tax					(3,128)		602
Less adjustment for impaired investments, tax							(301)
Less reclassification adjustment for gains realized in net loss, tax					23		134
Unrealized gains (losses) on investment securities, tax					(3,151)		769
Unrecognized benefit obligation expense [Abstract]
Less reclassification adjustment for amortization, tax					(146)		(90)
Other comprehensive income (loss), net, tax					(3,005)		859
Unrealized gains (losses) on investment securities [Abstract]
Unrealized holding losses arising during period, net of tax	(1,687)		1,067		(5,705)		838
Less adjustment for impaired investments, net of tax	0	[1]	0	[1]	0	[1]	(558)	[1]
Less reclassification adjustment for gains realized in net loss	0	[2]	147	[2]	46	[2]	250	[2]
Unrealized (losses) gains on investment securities	(1,687)		920		(5,751)		1,146
Unrecognized benefit obligation expense [Abstract]
Less reclassification adjustment for amortization	(94)	[3]	(150)	[3]	(283)	[3]	(264)	[3]
Other comprehensive (loss) income	$ (1,593)		$ 1,070		$ (5,468)		$ 1,410

[1] Amounts are included in total other-than-temporary impairment on investment securities on the Consolidated Statements of Operations in total non-interest income.

[2] Amounts are included in net gains on the sale of available for sale investment securities on the Consolidated Statements of Operations in total non-interest income.

[3] Amounts are included in salaries and benefits on the Consolidated Statements of Operations in non-interest expense.