CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Interest receivable - consolidated trusts amount	$ 141,764	$ 186,429
Accrued interest payable - consolidated trusts amount	85,216	92,738
Available-for-Sale Securities
Amortized cost of available-for-sale investment securities	3,800,537	3,843,666
Farmer Mac Guaranteed Securities:
Amortized cost of available-for-sale investment securities	6,511,776	6,594,992
Consolidated VIE
Interest receivable - consolidated trusts amount	8,411	16,401
Accrued interest payable - consolidated trusts amount	$ 6,752	$ 14,370
Series C
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Preferred stock, shares issued (in shares)	3,000,000	3,000,000
Preferred stock, shares outstanding (in shares)	3,000,000	3,000,000
Series D
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	4,000,000	4,000,000
Preferred stock, shares issued (in shares)	4,000,000	4,000,000
Preferred stock, shares outstanding (in shares)	4,000,000	4,000,000
Series E
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	3,180,000	3,180,000
Preferred stock, shares issued (in shares)	3,180,000	3,180,000
Preferred stock, shares outstanding (in shares)	3,180,000	3,180,000
Series F
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	4,800,000	4,800,000
Preferred stock, shares issued (in shares)	4,800,000	4,800,000
Preferred stock, shares outstanding (in shares)	4,800,000	4,800,000
Class A voting common stock
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares outstanding (in shares)	1,030,780	1,030,780
Class B voting common stock
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares outstanding (in shares)	500,301	500,301
Class C non-voting common stock
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares outstanding (in shares)	9,227,132	9,205,897

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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