Investment in Marketable Securities (Details) (USD $)	9 Months Ended
Sep. 30, 2011	Dec. 31, 2010
Available-for-sale Securities
Available-for-sale Securities, Amortized Cost	$ 18,060,000
Available-for-sales Securities, Gross Unrealized Losses	(5,082,000)
Available-for-sale Securities, Gross Unrealized Gains	906,000
Available-for-sale Securities, Estimated Fair Value	13,884,000	0
Investment in Marketable Securities (Textual) [Abstract]
Other comprehensive unrealized gain	900,000
Other comprehensive unrealized loss	5,100,000
Investment securities	13,884,000	0
Realized gains and/or losses	0
Equity Securities [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized Cost	18,060,000
Available-for-sales Securities, Gross Unrealized Losses	(5,082,000)
Available-for-sale Securities, Gross Unrealized Gains	906,000
Available-for-sale Securities, Estimated Fair Value	13,884,000
Investment in Marketable Securities (Textual) [Abstract]
Investment securities	$ 13,884,000

For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading.

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

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-Name Accounting Standards Codification

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

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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 115

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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-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 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-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 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

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-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 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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+ Details