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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Interest receivable - Consolidated Trusts amount | $ 155,278 | $ 122,782
Accrued interest payable - Consolidated Trusts amount | $ 75,402 | $ 49,700
Series A Preferred Stock [Member] |  |
Preferred stock, par value | $ 25 | $ 25
Preferred stock, shares authorized | 2,400,000 | 2,400,000
Preferred Stock, Shares Issued | 2,400,000 | 2,400,000
Preferred Stock, Shares Outstanding | 2,400,000 | 2,400,000
Series B Preferred Stock [Member] |  |
Preferred stock, par value | $ 25 | $ 25
Preferred stock, shares authorized | 3,000,000 | 3,000,000
Preferred Stock, Shares Issued | 3,000,000 | 3,000,000
Preferred Stock, Shares Outstanding | 3,000,000 | 3,000,000
Series C Preferred Stock [Member] |  |
Preferred stock, par value | $ 25 | $ 25
Preferred stock, shares authorized | 3,000,000 | 3,000,000
Preferred Stock, Shares Issued | 3,000,000 | 3,000,000
Preferred Stock, Shares Outstanding | 3,000,000 | 3,000,000
Common Class A, Voting [Member] |  |
Common stock, par value | $ 1 | $ 1
Common stock, shares outstanding | 1,030,780 | 1,030,780
Common Class B, Voting [Member] |  |
Common stock, par value | $ 1 | $ 1
Common stock, shares outstanding | 500,301 | 500,301
Common Class C, Non-Voting [Member] |  |
Common stock, par value | $ 1 | $ 1
Common stock, shares outstanding | 9,087,670 | 9,007,481
Variable Interest Entity, Primary Beneficiary [Member] |  |
Interest receivable - Consolidated Trusts amount | $ 17,373 | $ 12,584
Accrued interest payable - Consolidated Trusts amount | $ 14,631 | $ 10,881

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