Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements of Comprehensive Income [Abstract]
Net Income (Loss)	$ 8,508	$ 4,071	$ 20,764	$ (2,029)
Other-than-temporarily impaired securities available for sale:
Total gains (losses)	(361)	172	(1,318)	(2,841)
Losses recognized in earnings	119	75	323	2,358
Gains (losses) recognized in comprehensive income	(242)	247	(995)	(483)
Income tax effect	99	(101)	408	198
Unrealized holding gains (losses) on other-than-temporarily impaired securities available for sale, net of tax	(143)	146	(587)	(285)
Securities available for sale not other-than-temporarily impaired:
Gains arising during the year	4,735	3,955	2,535	7,871
Income tax effect	(1,777)	(1,485)	(907)	(3,020)
Total securities available for sale not-other-than temporarily impaired	2,958	2,470	1,628	4,851
Gains recognized in earnings	(8)	(75)	(8)	(150)
Income tax effect	3	30	3	60
Total securities available for sale not-other-than temporarily impaired	(5)	(45)	(5)	(90)
Unrealized holding gains on securities available for sale not other-than-temporarily-impaired , net of tax	2,953	2,425	1,623	4,761
Unrealized holding gain on securities, net	2,810	2,571	1,036	4,476
Minimum pension liability adjustment	(78)	103	77	307
Income tax effect	31	(41)	(31)	(123)
Total securities available for sale not other-than-temporarily impaired	(47)	62	46	184
Other comprehensive income	2,763	2,633	1,082	4,660
Comprehensive Income	$ 11,271	$ 6,704	$ 21,846	$ 2,631

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Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain (loss), net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain (loss) at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains (losses) realized upon the sale of securities, after tax; and (3) the unrealized gains (losses) realized upon the write-down of securities, after tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 55

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=6920433&loc=d3e998-108581

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 24

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 17, 22

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph c(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration