Accumulated Other Comprehensive Loss (Components of Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Available for sale (AFS) securities with OTTI: Unrealized holding gains, Before Tax Amount	$ 4,549	$ 1,788
Available for sale (AFS) securities with OTTI: Unrealized holding gains, tax effect	(1,819)	(718)
Available for sale (AFS) securities with OTTI: Unrealized holding gains, Net of Tax	2,730	1,070
Available for sale (AFS) securities with OTTI: Less: accretable yield recognized in income	160	125
Available for sale (AFS) securities with OTTI: Less: accretable yield recognized in income, Tax Effect	(64)	(50)
Other than Temporary Impairment Losses, Investments, Reclassification Adjustment of Noncredit Portion Included in Net Income, Available for Sale Securities, Net of Tax	96	75
Available for sale (AFS) securities with OTTI: Net unrealized gains on investments with OTTI, Before Tax Amount	4,389	1,663
Available for sale (AFS) securities with OTTI: Net unrealized gains on investments with OTTI: Net unrealized gains on investments with OTTI, Tax Effect	(1,755)	(668)
Available for sale (AFS) securities with OTTI: Net unrealized gains on investments with OTTI, Net of Tax	2,634	995
Available for sale securities - all other: Unrealized holding losses, Before Tax	4,990	(195)
Available for sale securities - all other: Unrealized holding losses, Tax Effect	(1,995)	79
Available for sale securities - all other: Unrealized holding losses, Net of Tax	2,995	(116)
Available for sale securities - all other: Less: gains recognized in income, Before Tax	(68)	250
Available for sale securities - all other: Less: gains recognized in income, Tax Effect	27	(101)
Available for sale securities - all other: Less: gains recognized in income, Net of Tax	(41)	149
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Before Tax	5,058	(445)
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Tax Effect	(2,022)	180
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Net of tax	3,036	(265)
Cash flow hedges: Unrealized holding gains, Before Tax	92	101
Cash flow hedges: Unrealized holding gains, Tax Effect	(37)	(41)
Cash flow hedges: Unrealized holding gains, Net of Tax	55	60
Unrealized net actuarial gain (loss), Net of Tax	(127)	715
Other Comprehensive Income, Before Tax Amount	9,328	2,520
Other Comprehensive Income, Tax (Expense) Benefit	(3,729)	(1,011)
Other Comprehensive Income, Net	5,599	1,509
Pension Plan [Member]
Unrealized net actuarial gain (loss), Before Tax	(298)	1,069
Unrealized net actuarial gain (loss), Tax Effect	119	(430)
Unrealized net actuarial gain (loss), Net of Tax	(179)	639
Less: amortization of unrecognized net gain (loss), Before Tax	(93)	(133)
Less: amortization of unrecognized net gain (loss), Tax Effect	37	53
Less: amortization of unrecognized net gain (loss), Net of Tax	(56)	(80)
Less: amortization of transition asset, Before Tax	10	10
Less: amortization of transition asset, Tax Effect	(4)	(4)
Less: amortization of transition asset, Net of Tax	6	6
Less: amortization of prior service costs, Before Tax	(3)	(3)
Less: amortization of prior service costs, Tax Effect	1	1
Less: amortization of prior service costs, Net of Tax	(2)	(2)
Net plan liability adjustment, Before Tax	(212)	1,195
Net plan liability adjustment, Tax Effect	85	(480)
Net plan liability adjustment, Net of Tax	(127)	715
SERP [Member]
Unrealized net actuarial gain (loss), Before Tax	0	0
Unrealized net actuarial gain (loss), Tax Effect	0	0
Unrealized net actuarial gain (loss), Net of Tax	0	0
Less: amortization of unrecognized net gain (loss), Before Tax	4	(1)
Less: amortization of unrecognized net gain (loss), Tax Effect	(1)	0
Less: amortization of unrecognized net gain (loss), Net of Tax	3	(1)
Less: amortization of prior service costs, Before Tax	(5)	(5)
Less: amortization of prior service costs, Tax Effect	1	2
Less: amortization of prior service costs, Net of Tax	(4)	(3)
Net plan liability adjustment, Before Tax	1	6
Net plan liability adjustment, Tax Effect	0	(2)
Net plan liability adjustment, Net of Tax	$ 1	$ 4

Net of tax amount of the amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

No definition available.