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Fair Values (Schedule of Fair Value Measurement) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 USD ($) Loan | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) Loan | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) Loan
Assets and liabilities recorded at fair value |  |  |  |  |
Payments to acquire available-for-sale securities |  |  | $ 4,400 |  |
Impairment of assets | $ 8,741 | $ 3,916 | 11,753 | $ 5,590 |
Recurring basis | Quoted market prices in active markets (Level 1) |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Derivative assets | 0 |  | 0 |  | $ 0
Derivative liabilities | 0 |  | 0 |  | 0
Available-for-sale securities | 0 |  | 0 |  | 0
Recurring basis | Significant other observable inputs (Level 2) |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Derivative assets | 139 |  | 139 |  | 1,522
Derivative liabilities | 768 |  | 768 |  | 131
Recurring basis | Significant unobservable inputs (Level 3) |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Available-for-sale securities | 5,780 |  | 5,780 |  | 1,161
Non-recurring basis | liquidation [Member] | Loans Receivable One |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impaired loans | $ 144,700 |  | $ 144,700 |  |
Number of impaired loans | Loan | 1 |  | 1 |  |
Non-recurring basis | comparable sales [Member] | Loans Receivable Two |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impaired loans | $ 30,200 |  | $ 30,200 |  |
Closing costs as a percentage of sales price | 4.00% |  | 4.00% |  |
Non-recurring basis | Discounted Cash Flow Valuation Technique | Loans Receivable Two |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impaired loans |  |  |  |  | $ 3,200
Number of impaired loans | Loan |  |  |  |  | 1
Discount rate |  |  |  |  | 14.30%
Non-recurring basis | Quoted market prices in active markets (Level 1) |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impaired loans | $ 0 |  | $ 0 |  | $ 0
Impaired land and development | 0 |  | 0 |  |
Non-recurring basis | Significant unobservable inputs (Level 3) |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impaired loans | 174,899 |  | 174,899 |  | 3,200
Fair Value | Recurring basis |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Derivative assets | 139 |  | 139 |  | 1,522
Derivative liabilities | 768 |  | 768 |  | 131
Available-for-sale securities | 5,780 |  | 5,780 |  | 1,161
Fair Value | Non-recurring basis |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impaired loans | $ 174,899 |  | 174,899 |  | $ 3,200
Land |  |  |  |  |
Assets and liabilities recorded at fair value |  |  |  |  |
Impairment of assets |  |  | $ 3,800 |  |

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