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Risk Management and Derivatives (Risk Concentration) (Details) | 12 Months Ended
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Dec. 31, 2019 borrower
Office/Industrial |
Concentration Risk [Line Items] |
Concentration risk, percentage | 28.50%
Land |
Concentration Risk [Line Items] |
Concentration risk, percentage | 15.40%
Entertainment/Leisure |
Concentration Risk [Line Items] |
Concentration risk, percentage | 20.10%
Hotel |
Concentration Risk [Line Items] |
Concentration risk, percentage | 5.20%
Mixed Use/Mixed Collateral |
Concentration Risk [Line Items] |
Concentration risk, percentage | 5.30%
Customer Concentration Risk |
Concentration Risk [Line Items] |
Number of large borrowers or tenants | 5
Concentration risk percentage of revenue (no more than) | 19.80%
Concentration risk percentage of one single customer, revenue (no more than) | 11.80%
New York | Geographic Concentration Risk |
Concentration Risk [Line Items] |
Concentration risk, percentage | 16.70%
New Jersey | Geographic Concentration Risk |
Concentration Risk [Line Items] |
Concentration risk, percentage | 14.20%
California | Geographic Concentration Risk |
Concentration Risk [Line Items] |
Concentration risk, percentage | 12.50%

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