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Summary of Significant Accounting Policies (Held-to-Maturity Securities) (Details) (Banco Santander Bonds [Member], USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2012 | Jun. 30, 2012 | Mar. 23, 2012
Banco Santander Bonds [Member] |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-to-maturity securities, Premium Paid |  |  | $ 200,000
Cash Received for Held-to-Maturity Securities Sold | 20,009,000 |  |
Premium on held-to-maturity securities | 20,042,000 |  |
Accrued Investment Income Receivable |  |  | 500,000
Interest income rate (as a percent) |  | 2.875% |
Loss On Held-to-maturity Securities Sold | $ (33,000) |  |

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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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