CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Interest receivable	$ 79,579	$ 90,295
Accrued interest payable	48,998	57,131
Preferred stock, Series C, par value	$ 1,000	$ 1,000
Preferred stock, Series C, shares authorized	100,000	100,000
Preferred stock, Series C, shares issued	57,578	57,578
Preferred stock, Series C, shares outstanding	57,578	57,578
Consolidated trusts
Interest receivable	10,650	22,845
Accrued interest payable	$ 8,248	$ 14,439
Common Stock, Class A Voting
Common stock, par value	$ 1	$ 1
Common stock, shares outstanding	1,030,780	1,030,780
Common stock, Class B Voting
Common stock, par value	$ 1	$ 1
Common stock, shares outstanding	500,301	500,301
Common stock, Class C Non-Voting
Common stock, par value	$ 1	$ 1
Common stock, shares outstanding	8,825,594	8,752,711