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Offsetting Assets and Liabilities Offsetting Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2015
Offsetting Liabilities [Line Items] |
Offsetting Liabilities [Table Text Block] |
| Offsetting of Liabilities
| Gross Amount of Recognized Liabilities |  | Gross Amount Offset in the Balance Sheet |  | Net Amount of Liabilities Presented in the Balance Sheet |  | Gross Amount Not Offset in the Balance Sheet (1) |  | Net Amount
Financial Instruments Posted as Collateral |  | Cash Posted as Collateral
June 30, 2015: |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities | $ | 48,240 |  |  | $ | — |  |  | $ | 48,240 |  |  | $ | (4,249 | ) |  | $ | (43,991 | ) |  | $ | — |
Repurchase agreements | 3,402,964 |  |  | — |  |  | 3,402,964 |  |  | (3,402,964 | ) |  | — |  |  | — |
| $ | 3,451,204 |  |  | $ | — |  |  | $ | 3,451,204 |  |  | $ | (3,407,213 | ) |  | $ | (43,991 | ) |  | $ | — |
December 31, 2014: |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities | $ | 35,898 |  |  | $ | — |  |  | $ | 35,898 |  |  | $ | (2,494 | ) |  | $ | (32,994 | ) |  | $ | 410 |
Repurchase agreements | 3,013,110 |  |  | — |  |  | 3,013,110 |  |  | (3,013,110 | ) |  | — |  |  | — |
| $ | 3,049,008 |  |  | $ | — |  |  | $ | 3,049,008 |  |  | $ | (3,015,604 | ) |  | $ | (32,994 | ) |  | $ | 410 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of derivative and other financial liabilities that are subject to offsetting, including master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225877-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 + Details
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