CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock [Member] 7.125% Series F Preferred Stock [Member]	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, 2015	$ 129,375	$ 75,000	$ 0	$ 94	$ 264	$ 431,411	$ (94,136)			$ (1,230)	$ 540,778
Balance (in shares) at Oct. 31, 2015	5,175,000	3,000,000	0	9,350,885	26,370,216
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income applicable to Common and Class A common stockholders							19,436				19,436	$ 4,142	$ 15,294
Change in unrealized gains on marketable securities											0
Change in unrealized gain (loss) on interest rate swap										(73)	(73)
Cash dividends paid:
Common stock								$ (8,745)	$ (28,348)		(8,745)		(28,348)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	219					219
Issuance of shares under dividend reinvestment plan (in shares)				4,988	5,854
Shares issued under restricted stock plan				$ 2	$ 1	(3)					0
Shares issued under restricted stock plan (in shares)				152,100	95,600
Forfeiture of restricted stock					$ 0	0					0
Forfeiture of restricted stock (in shares)					(650)
Issuance of common stock					$ 31	73,623					73,654
Issuance of common stock (in shares)					3,162,500
Restricted stock compensation and other adjustments						4,410					4,410
Adjustments to redeemable noncontrolling interests							(2,298)			0	(2,298)
Balance at Oct. 31, 2016	$ 129,375	$ 75,000	$ 0	$ 96	$ 296	509,660	(114,091)			(1,303)	599,033
Balance (in shares) at Oct. 31, 2016	5,175,000	3,000,000	0	9,507,973	29,633,520
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income applicable to Common and Class A common stockholders							33,898				33,898	6,857	27,041
Change in unrealized gains on marketable securities											0
Change in unrealized gain (loss) on interest rate swap										4,045	4,045
Cash dividends paid:
Common stock								(9,082)	(31,514)			(9,082)	(31,514)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	200					200
Issuance of shares under dividend reinvestment plan (in shares)				4,705	5,399
Shares issued under restricted stock plan				$ 1	$ 1	(2)					0
Shares issued under restricted stock plan (in shares)				152,100	96,225
Forfeiture of restricted stock						0					0
Forfeiture of restricted stock (in shares)					(6,400)
Issuance of Preferred Stock			$ 115,000			(3,672)					111,328
Issuance of Preferred Stock (in shares)			4,600,000
Redemption of Preferred Stock Series	$ (129,375)					4,075					(125,300)
Redemption of Preferred Stock (in shares)	(5,175,000)
Restricted stock compensation and other adjustments						3,956					3,956
Adjustments to redeemable noncontrolling interests							666				666
Balance at Oct. 31, 2017	$ 0	$ 75,000	$ 115,000	$ 97	$ 297	514,217	(120,123)			2,742	587,230
Balance (in shares) at Oct. 31, 2017	0	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							25,217				25,217	5,173	20,044
Change in unrealized gains on marketable securities										569	569
Change in unrealized gain (loss) on interest rate swap										4,155	4,155
Cash dividends paid:
Common stock								$ (9,426)	$ (32,200)			$ (9,426)	$ (32,200)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	197					197
Issuance of shares under dividend reinvestment plan (in shares)				4,528	5,766
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 (in shares)					(10,886)
Shares withheld for employee taxes						(240)					(240)
Forfeiture of restricted stock					$ 0	0					0
Forfeiture of restricted stock (in shares)					(4,950)
Restricted stock compensation and other adjustments						4,085					4,085
Repurchase of common stock						(120)					(120)
Repurchase of common stock (in shares)					(6,660)
Adjustments to redeemable noncontrolling interests							2,674				2,674
Balance at Oct. 31, 2018	$ 0	$ 75,000	$ 115,000	$ 99	$ 298	$ 518,136	$ (133,858)			$ 7,466	$ 582,141
Balance (in shares) at Oct. 31, 2018	0	3,000,000	4,600,000	9,822,006	29,814,814