Basis of Presentation and Significant Accounting Policies Commercial Real Estate Assets (of Discontinued Operations) (Details) |
12 Months Ended |
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Dec. 31, 2017 | |
| Basis of Presentation and Significant Accounting Policies [Abstract] | |
| Threshold period when loans are considered past due | 30 days |
| Threshold period when delinquent loans are placed on nonaccrual status | 60 days |
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- Definition Basis of Presentation and Significant Accounting Policies [Abstract] No definition available.
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- Definition Threshold period delinquent for financing receivable to place on nonaccrual status, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Threshold period for when financing receivable is considered past due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes threshold period past due to write off as uncollectible. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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