v3.8.0.1
Valuation (Schedule Of Significant Unobservable Inputs, Qualitative Information) (Details) - Level 3 [Member]
 9 Months Ended 12 Months Ended
Sep. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Market Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 23,182,000 $ 47,024,000
Market Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 46.28 2.00
Market Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 478.10 101.02
Market Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 95.08 67.51
Market Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 24,586,000 $ 37,517,000
Market Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 3.10 9.42
Market Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 440.00 100.25
Market Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 122.21 83.36
Market Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 9,782,000 $ 19,017,000
Market Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 0.88 1.88
Market Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 99.50 102.25
Market Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 81.87 87.14
Market Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 7,721,000 $ 27,283,000
Market Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 5.36 5.17
Market Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 42.00 77.75
Market Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 18.18 40.88
Market Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 502,000 $ 23,322,000
Market Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 16.89 2.47
Market Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 18.44 20.17
Market Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation 17.85 11.65
Market Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 5,588,000  
Market Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation [1] 100.00  
Market Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation [1] 100.00  
Market Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation [1] 100.00  
Income Approach Valuation Technique [Member] | Corporate debt and warrants [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value   $ 10,080,000
Income Approach Valuation Technique [Member] | Corporate debt and warrants [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield   19.70%
Income Approach Valuation Technique [Member] | Corporate debt and warrants [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield   19.70%
Income Approach Valuation Technique [Member] | Corporate debt and warrants [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield   19.70%
Income Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 50,466,000 $ 43,059,000
Income Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 1.70% 0.60%
Projected Collateral Prepayments 2.50% 0.00%
Fair Value Inputs Losses 1.30% 1.40%
Fair Value Inputs Projected Collateral Recoveries 0.00% 0.40%
Fair Value Inputs Projected Collateral Scheduled Amortization 12.90% 0.00%
Income Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 25.60% 20.50%
Projected Collateral Prepayments 84.60% 81.00%
Fair Value Inputs Losses 18.20% 51.20%
Fair Value Inputs Projected Collateral Recoveries 13.90% 53.60%
Fair Value Inputs Projected Collateral Scheduled Amortization 90.70% 90.70%
Income Approach Valuation Technique [Member] | Private Label Residential Mortgage Backed Securities [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 9.80% 11.00%
Projected Collateral Prepayments 44.00% 10.00%
Fair Value Inputs Losses 9.00% 41.40%
Fair Value Inputs Projected Collateral Recoveries 6.40% 41.20%
Fair Value Inputs Projected Collateral Scheduled Amortization 40.60% 7.40%
Total Outstanding Collateral 100.00% 100.00%
Income Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 2,332,000 $ 7,439,000
Income Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 11.20% 11.20%
Projected Collateral Prepayments 67.80% 11.40%
Fair Value Inputs Losses 18.80% 4.50%
Fair Value Inputs Projected Collateral Recoveries 7.80% 1.50%
Fair Value Inputs Projected Collateral Scheduled Amortization 0.00% 29.80%
Income Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 58.70% 50.30%
Projected Collateral Prepayments 68.70% 55.20%
Fair Value Inputs Losses 21.00% 28.30%
Fair Value Inputs Projected Collateral Recoveries 12.50% 27.20%
Fair Value Inputs Projected Collateral Scheduled Amortization 3.50% 51.50%
Income Approach Valuation Technique [Member] | Collateralized Loan Obligations [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 26.90% 20.50%
Projected Collateral Prepayments 68.40% 45.50%
Fair Value Inputs Losses 19.50% 10.70%
Fair Value Inputs Projected Collateral Recoveries 10.90% 8.60%
Fair Value Inputs Projected Collateral Scheduled Amortization 1.20% 35.20%
Total Outstanding Collateral 100.00% 100.00%
Income Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 7,194,000  
Income Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 8.70%  
Income Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 16.10%  
Income Approach Valuation Technique [Member] | Corporate Debt and non-exchange traded corporate equity [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 15.00%  
Income Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 3,911,000 $ 15,985,000
Income Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 9.10% 8.80%
Fair Value Inputs Losses 0.10% 0.10%
Fair Value Inputs Projected Collateral Recoveries 1.30% 0.90%
Fair Value Inputs Projected Collateral Scheduled Amortization 80.10% 77.80%
Income Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 50.10% 57.00%
Fair Value Inputs Losses 5.10% 5.30%
Fair Value Inputs Projected Collateral Recoveries 14.80% 20.50%
Fair Value Inputs Projected Collateral Scheduled Amortization 98.60% 99.00%
Income Approach Valuation Technique [Member] | Private Label Commercial Mortgage-Backed Securities [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 23.10% 23.60%
Fair Value Inputs Losses 2.20% 2.20%
Fair Value Inputs Projected Collateral Recoveries 8.00% 10.70%
Fair Value Inputs Projected Collateral Scheduled Amortization 89.80% 87.10%
Total Outstanding Collateral 100.00% 100.00%
Income Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 5,317,000 $ 6,300,000
Income Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Projected Collateral Prepayments 8.70% 0.00% [2]
Fair Value Inputs Projected Collateral Scheduled Amortization 0.00% 0.00%
LIBOR OAS 4.23% [3] 1.42% [4]
Income Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Projected Collateral Prepayments 100.00% 100.00% [2]
Fair Value Inputs Projected Collateral Scheduled Amortization 91.30% 88.10%
LIBOR OAS 19.50% [3] 28.31% [4]
Income Approach Valuation Technique [Member] | Agency Interest Only Residential Mortgage-Backed Securities [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Projected Collateral Prepayments 71.30% 63.60% [2]
Fair Value Inputs Projected Collateral Scheduled Amortization 28.70% 36.40%
Total Outstanding Collateral 100.00% 100.00%
LIBOR OAS 7.29% [3] 5.68% [4]
Income Approach Valuation Technique [Member] | Consumer loans and asset-backed securities backed by consumer loans [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 116,340,000 $ 107,157,000 [2]
Income Approach Valuation Technique [Member] | Consumer loans and asset-backed securities backed by consumer loans [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 9.00% 9.00% [2]
Projected Collateral Prepayments 0.00% 0.00% [2]
Fair Value Inputs Losses 0.00% 3.30% [2]
Fair Value Inputs Projected Collateral Scheduled Amortization 5.00% 0.00% [2]
Income Approach Valuation Technique [Member] | Consumer loans and asset-backed securities backed by consumer loans [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 18.40% 25.00% [2]
Projected Collateral Prepayments 51.40% 45.40% [2]
Fair Value Inputs Losses 95.00% 97.40% [2]
Fair Value Inputs Projected Collateral Scheduled Amortization 100.00% 87.70% [2]
Income Approach Valuation Technique [Member] | Consumer loans and asset-backed securities backed by consumer loans [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 10.30% 11.00% [2]
Projected Collateral Prepayments 36.50% 25.60% [2]
Fair Value Inputs Losses 7.20% 9.40% [2]
Fair Value Inputs Projected Collateral Scheduled Amortization 56.30% 65.00% [2]
Total Outstanding Collateral 100.00% 100.00% [2]
Income Approach Valuation Technique [Member] | Performing Commercial Mortgage Loans [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 61,339,000 $ 32,557,000
Income Approach Valuation Technique [Member] | Performing Commercial Mortgage Loans [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 8.00% 8.00%
Income Approach Valuation Technique [Member] | Performing Commercial Mortgage Loans [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 15.40% 17.20%
Income Approach Valuation Technique [Member] | Performing Commercial Mortgage Loans [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 11.10% 11.60%
Income Approach Valuation Technique [Member] | Performing Residential Mortgage Loans [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 153,709,000 $ 78,576,000
Income Approach Valuation Technique [Member] | Performing Residential Mortgage Loans [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 1.60% 5.00%
Income Approach Valuation Technique [Member] | Performing Residential Mortgage Loans [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 24.70% 13.50%
Income Approach Valuation Technique [Member] | Performing Residential Mortgage Loans [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 6.20% 6.60%
Income Approach Valuation Technique [Member] | Non-performing Residential Mortgage Loans and Residential Real Estate Owned [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 9,940,000 $ 7,413,000
Income Approach Valuation Technique [Member] | Non-performing Residential Mortgage Loans and Residential Real Estate Owned [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 0.70% 5.80%
Months to Resolution 3 months [5] 1 month 24 days
Income Approach Valuation Technique [Member] | Non-performing Residential Mortgage Loans and Residential Real Estate Owned [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 42.90% 39.90%
Months to Resolution 34 months 3 days [5] 162 months 27 days
Income Approach Valuation Technique [Member] | Non-performing Residential Mortgage Loans and Residential Real Estate Owned [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 11.30% 9.70%
Months to Resolution 12 months 18 days [5] 41 months 27 days
Income Approach Valuation Technique [Member] | Non-performing Commercial Mortgage Loans and Commercial Real Estate Owned [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 31,632,000 $ 30,222,000
Income Approach Valuation Technique [Member] | Non-performing Commercial Mortgage Loans and Commercial Real Estate Owned [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 4.50% 10.20%
Months to Resolution 3 months 3 months
Income Approach Valuation Technique [Member] | Non-performing Commercial Mortgage Loans and Commercial Real Estate Owned [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 23.20% 27.80%
Months to Resolution 12 months 39 months 3 days
Income Approach Valuation Technique [Member] | Non-performing Commercial Mortgage Loans and Commercial Real Estate Owned [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield 12.90% 16.30%
Months to Resolution 8 months 22 days 19 months 15 days
Income Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 5,857,000  
Income Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield [1] 9.00%  
Income Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield [1] 9.00%  
Income Approach Valuation Technique [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield [1] 9.00%  
Credit Default Swaps On Asset Backed Securities [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 4,323,000 $ 5,070,000
Credit Default Swaps On Asset Backed Securities [Member] | Income Approach Valuation Technique [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Projected Collateral Prepayments 19.60% 19.30%
Fair Value Inputs Losses 14.40% 15.30%
Fair Value Inputs Projected Collateral Recoveries 5.60% 4.70%
Fair Value Inputs Projected Collateral Scheduled Amortization 44.20% 43.20%
Credit Default Swaps On Asset Backed Securities [Member] | Income Approach Valuation Technique [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Projected Collateral Prepayments 26.60% 29.80%
Fair Value Inputs Losses 24.60% 27.60%
Fair Value Inputs Projected Collateral Recoveries 15.10% 15.30%
Fair Value Inputs Projected Collateral Scheduled Amortization 53.30% 50.20%
Credit Default Swaps On Asset Backed Securities [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Projected Collateral Prepayments 22.70% 22.70%
Fair Value Inputs Losses 21.30% 22.20%
Fair Value Inputs Projected Collateral Recoveries 9.50% 8.70%
Fair Value Inputs Projected Collateral Scheduled Amortization 46.50% 46.40%
Total Outstanding Collateral 100.00% 100.00%
Total Return Swaps [Member] | Market Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Financial and Nonfinancial Liabilities, Fair Value Disclosure   $ (94,000)
Total Return Swaps [Member] | Market Approach Valuation Technique [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation [6]   98.25
Total Return Swaps [Member] | Market Approach Valuation Technique [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation [6]   99.50
Total Return Swaps [Member] | Market Approach Valuation Technique [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Non Binding Third-Party Valuation [6]   98.77
Corporate Equity Investments [Member] | Non-exchange traded equity investments in commercial mortgage-related private partnerships [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value   $ 3,090,000
Corporate Equity Investments [Member] | Non-exchange traded equity investments in commercial mortgage-related private partnerships [Member] | Income Approach Valuation Technique [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield   16.50%
Fair Value Assumptions, Expected Term   2 months 27 days
Corporate Equity Investments [Member] | Non-exchange traded equity investments in commercial mortgage-related private partnerships [Member] | Income Approach Valuation Technique [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield   16.50%
Fair Value Assumptions, Expected Term   2 months 27 days
Corporate Equity Investments [Member] | Non-exchange traded equity investments in commercial mortgage-related private partnerships [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield   16.50%
Fair Value Assumptions, Expected Term   2 months 27 days
Corporate Equity Investments [Member] | Non-Exchange Traded Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 2,814,000  
Corporate Equity Investments [Member] | Non-Exchange Traded Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [7] 1.8  
Corporate Equity Investments [Member] | Non-Exchange Traded Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [7] 1.8  
Corporate Equity Investments [Member] | Non-Exchange Traded Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [7] 1.8  
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred and Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value   $ 2,500,000
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred and Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [8]   1.3
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred and Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [8]   1.3
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred and Common Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [8]   1.3
Corporate Equity Investments [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value [2]   $ 7,315,000
Corporate Equity Investments [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Income Approach Valuation Technique [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield [2]   8.50%
Corporate Equity Investments [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Income Approach Valuation Technique [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield [2]   8.50%
Corporate Equity Investments [Member] | Non-Controlling Equity Interest in Limited Liability Company [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Yield [2]   8.50%
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value $ 19,000,000  
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Minimum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [7] 1.0  
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Maximum [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [7] 1.0  
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Mortgage-Related Entities [Member] | Enterprise Value [Member] | Weighted Average [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Equity Multiple [7] 1.0  
Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Mortgage-Related Entities [Member] | Recent Transactions [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair value   $ 12,500,000
[1] Represents the significant unobservable inputs used to fair value the financial instruments of the limited liability company. The fair value of such financial instruments is the largest component of the valuation of the limited liability company as a whole.
[2] Conformed to current period presentation.
[3] Shown in basis points.
[4] Shown in basis points.
[5] Excludes certain loans that are re-performing.
[6] Represents valuations on underlying assets.
[7] Represent an estimation of where market participants might value an enterprise on a price-to-book basis.
[8] Represent an estimation of where market participants might value an enterprise on a price-to-book basis.