CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Preferred Stock [Member] 6.75% Series G Cumulative Preferred Stock [Member]	Preferred Stock [Member] 6.25% Series H Cumulative Preferred Stock [Member]	Preferred Stock [Member] 5.875% Series K Cumulative 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, 2018	$ 75,000	$ 115,000		$ 99	$ 298	$ 518,136	$ (133,858)			$ 7,466	$ 582,141
Balance (in shares) at Oct. 31, 2018	3,000,000	4,600,000		9,822,006	29,814,814
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax							569			(569)	0
Net income applicable to Common and Class A common stockholders							11,652				11,652	$ 2,453	$ 9,198
Change in unrealized gain (loss) on interest rate swap										(7,098)	(7,098)
Cash dividends paid :
Common stock								$ (4,880)	$ (16,422)			(4,880)	(16,422)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	98					98
Issuance of shares under dividend reinvestment plan (in shares)				2,403	2,872
Shares issued under restricted stock plan				$ 1	$ 1	(2)					0
Shares issued under restricted stock plan (in shares)				137,200	111,450
Shares withheld for employee taxes					$ 0	(269)					(269)
Shares withheld for employee taxes (in shares)					(14,290)
Forfeiture of restricted stock					$ 0						0
Forfeiture of restricted stock (in shares)					(13,700)
Restricted stock compensation and other adjustments						2,111					2,111
Adjustments to redeemable noncontrolling interests							(1,380)				(1,380)
Balance at Apr. 30, 2019	$ 75,000	$ 115,000		$ 100	$ 299	520,074	(144,319)			(201)	565,953
Balance (in shares) at Apr. 30, 2019	3,000,000	4,600,000		9,961,609	29,901,146
Balance at Oct. 31, 2018	$ 75,000	$ 115,000		$ 99	$ 298	518,136	(133,858)			7,466	582,141
Balance (in shares) at Oct. 31, 2018	3,000,000	4,600,000		9,822,006	29,814,814
Balance at Oct. 31, 2019		$ 115,000	$ 110,000	$ 101	$ 299	520,988	(158,213)			(8,451)	579,724
Balance (in shares) at Oct. 31, 2019		4,600,000	4,400,000	9,963,751	29,893,241
Balance at Jan. 31, 2019	$ 75,000	$ 115,000		$ 100	$ 299	518,985	(138,248)			1,562	572,698
Balance (in shares) at Jan. 31, 2019	3,000,000	4,600,000		9,960,445	29,913,560
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income applicable to Common and Class A common stockholders							5,798				5,798	1,221	4,577
Change in unrealized gain (loss) on interest rate swap										(1,763)	(1,763)
Cash dividends paid :
Common stock								(2,440)	(8,196)			(2,440)	(8,196)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	48					48
Issuance of shares under dividend reinvestment plan (in shares)				1,164	1,390
Shares withheld for employee taxes						(4)					(4)
Shares withheld for employee taxes (in shares)					(204)
Forfeiture of restricted stock					$ 0						0
Forfeiture of restricted stock (in shares)					(13,600)
Restricted stock compensation and other adjustments						1,045					1,045
Repurchase of Common stock					$ 0	0					0
Repurchase of Common stock (in shares)					0
Adjustments to redeemable noncontrolling interests							(1,233)				(1,233)
Balance at Apr. 30, 2019	$ 75,000	$ 115,000		$ 100	$ 299	520,074	(144,319)			(201)	565,953
Balance (in shares) at Apr. 30, 2019	3,000,000	4,600,000		9,961,609	29,901,146
Balance at Oct. 31, 2019		$ 115,000	$ 110,000	$ 101	$ 299	520,988	(158,213)			(8,451)	579,724
Balance (in shares) at Oct. 31, 2019		4,600,000	4,400,000	9,963,751	29,893,241
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income applicable to Common and Class A common stockholders							7,870				7,870	1,705	6,165
Change in unrealized gain (loss) on interest rate swap										(9,047)	(9,047)
Cash dividends paid :
Common stock								(5,035)	(16,796)			(5,035)	(16,796)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	105					105
Issuance of shares under dividend reinvestment plan (in shares)				2,780	3,896
Shares issued under restricted stock plan				$ 1	$ 1	(2)					0
Shares issued under restricted stock plan (in shares)				105,450	120,800
Shares withheld for employee taxes					$ 0	(573)					(573)
Shares withheld for employee taxes (in shares)					(23,873)
Forfeiture of restricted stock					$ 0						0
Forfeiture of restricted stock (in shares)					0
Restricted stock compensation and other adjustments						3,532					3,532
Adjustments to redeemable noncontrolling interests							11,009				11,009
Balance at Apr. 30, 2020		$ 115,000	$ 110,000	$ 102	$ 300	524,050	(161,165)			(17,498)	570,789
Balance (in shares) at Apr. 30, 2020		4,600,000	4,400,000	10,071,981	29,994,064
Balance at Jan. 31, 2020		$ 115,000	$ 110,000	$ 102	$ 300	521,516	(163,511)			(9,463)	573,944
Balance (in shares) at Jan. 31, 2020		4,600,000	4,400,000	10,070,238	29,991,496
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income applicable to Common and Class A common stockholders							2,799				2,799	607	2,192
Change in unrealized gain (loss) on interest rate swap										(8,035)	(8,035)
Cash dividends paid :
Common stock								$ (2,518)	$ (8,398)			$ (2,518)	$ (8,398)
Issuance of shares under dividend reinvestment plan				$ 0	$ 0	53					53
Issuance of shares under dividend reinvestment plan (in shares)				1,743	2,568
Shares withheld for employee taxes					$ 0	0					0
Shares withheld for employee taxes (in shares)					0
Forfeiture of restricted stock					$ 0						0
Forfeiture of restricted stock (in shares)					0
Restricted stock compensation and other adjustments						2,481					2,481
Adjustments to redeemable noncontrolling interests							10,463				10,463
Balance at Apr. 30, 2020		$ 115,000	$ 110,000	$ 102	$ 300	$ 524,050	$ (161,165)			$ (17,498)	$ 570,789
Balance (in shares) at Apr. 30, 2020		4,600,000	4,400,000	10,071,981	29,994,064