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Summary of Significant Accounting Policies (Held-to-Maturity Securities) (Details) (USD $) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2012 Banco Santander Bonds [Member] | Mar. 23, 2012 Banco Santander Bonds [Member]
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Amortized Cost (Net Carrying Amount) | $ 50,000,000 |  | $ 50,000,000 | $ 50,000,000
Premium on held-to-maturity securities | 175,000 |  | 175,000 | 200,000
Premium Amortization | 11,000 |  | 11,000 |
Amortized Cost | 50,164,000 | 0 | 50,164,000 |
Accrued Investment Income Receivable |  |  |  | $ 500,000
Interest income rate (as a percent) |  |  | 2.90% |

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- Definition Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Number 210 -Article 7 -Section 03 -Paragraph 4 -Name Regulation S-X (SX) + Details
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- Definition For an unclassified balance sheet, this item represents investments in debt securities which are categorized as held-to-maturity. The held-to-maturity category is for those securities that the entity has the positive intent and ability to hold until maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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