CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) - 6 months ended Apr. 30, 2018 - USD ($) $ in Thousands	Preferred Stock [Member] 6.75% Series G Preferred Stock [Member]	Preferred Stock [Member] 6.25% Series H Preferred Stock [Member]	Common Stock [Member] Common Stock [Member]	Common Stock [Member] Class A Common Stock [Member]	Additional Paid In Capital [Member]	Cumulative Distributions in Excess of Net Income [Member]	Cumulative Distributions in Excess of Net Income [Member] Common Stock [Member]	Cumulative Distributions in Excess of Net Income [Member] Class A Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total	Common Stock [Member]	Class A Common Stock [Member]
Balance at Oct. 31, 2017	$ 75,000	$ 115,000	$ 97	$ 297	$ 514,217	$ (120,123)			$ 2,742	$ 587,230
Balance (in shares) at Oct. 31, 2017	3,000,000	4,600,000	9,664,778	29,728,744
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income applicable to Common and Class A common stockholders						14,519				14,519	$ 2,987	$ 11,532
Change in unrealized losses on marketable securities									22	22
Change in unrealized income on interest rate swap									3,550	3,550
Cash dividends paid :
Common stock							$ (4,713)	$ (16,100)			$ (4,713)	(16,100)
Issuance of shares under dividend reinvestment plan			$ 0	$ 0	99					99
Issuance of shares under dividend reinvestment plan (in shares)			2,287	2,965
Shares issued under restricted stock plan			$ 2	$ 1	(3)					0
Shares issued under restricted stock plan (in shares)			152,700	102,800
Shares withheld for employee taxes					(240)					(240)		$ 0
Shares withheld for employee taxes (in shares)												(10,886)
Forfeiture of restricted stock										0
Forfeiture of restricted stock (in shares)												(3,600)
Restricted stock compensation and other adjustments					1,785					1,785
Repurchase of Common stock					(120)					(120)		$ 0
Repurchase of Common stock (in shares)												(6,660)
Adjustments to redeemable noncontrolling interests						3,102				3,102
Balance at Apr. 30, 2018	$ 75,000	$ 115,000	$ 99	$ 298	$ 515,738	$ (123,315)			$ 6,314	$ 589,134
Balance (in shares) at Apr. 30, 2018	3,000,000	4,600,000	9,819,765	29,813,363