Fair Value (Reconciliation Of Level 3 Input For Financial Instruments Measured On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2011 Obligations Of States And Political Subdivisions [Member]	Mar. 31, 2012 Equity Securities [Member]	Mar. 31, 2011 Equity Securities [Member]	Mar. 31, 2012 Fair Value Swap [Member]	Mar. 31, 2011 Fair Value Swap [Member]	Dec. 31, 2010 Fair Value Swap [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning	$ 2,598	$ 763	$ 745	$ (700)	$ (60)	$ (60)
Total gains/(losses), Included in other comprehensive income	(128)	(7)	(5)
Periodic settlement of fair value swap				(565)
Balance, ending	$ 2,470	$ 756	$ 740	$ (135)	$ (60)	$ (60)

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Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

+ Details

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition

Amount of gain (loss) recognized in other comprehensive income, arising from assets, liabilities and financial instruments classified in shareholders' equity measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

+ Details

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