Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements Of Comprehensive Income (Abstract)
Net Income (Loss)	$ 7,432	$ (10,955)	$ 12,256	$ (6,100)
Other-than-temporarily impaired securities available for sale:
Total losses	(184)	(1,256)	(957)	(3,013)
Losses recognized in earnings	43	511	204	2,283
Losses recognized in comprehensive income	(141)	(745)	(753)	(730)
Income tax effect	58	305	309	299
Unrealized holding losses on other-than-temporarily impaired securities available for sale, net of tax	(83)	(440)	(444)	(431)
Securities available for sale not other-than-temporarily impaired:
Gains (losses) arising during the year	333	698	(2,200)	3,914
Income tax effect	(119)	(269)	870	(1,535)
Total securities available for sale not other-than-temporarily impaired	214	429	(1,330)	2,379
Gains recognized in earnings		(7)		(75)
Income tax effect		3		30
Total securities available for sale not other-than-temporarily impaired		(4)		(45)
Unrealized holding gains (losses) on securities available for sale not other-than-temporarily- impaired, net of tax	214	425	(1,330)	2,334
Unrealized holding gain (loss) on securities, net	131	(15)	(1,774)	1,903
Minimum pension liability adjustment	74	102	155	204
Income tax effect	(30)	(41)	(62)	(82)
Total securities available for sale not other-than-temporarily impaired	44	61	93	122
Other comprehensive income (loss)	175	46	(1,681)	2,025
Comprehensive Income (Loss)	$ 7,607	$ (10,909)	$ 10,575	$ (4,075)

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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

Name:	us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration