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Securities Available for Sale at Fair Value (Details Narrative) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
	Oct. 02, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Marketable REIT securities fair value				$ 177,400
Security available for sale, maximum percentage of investment on undepreciated assets				10.00%
Total assets excluding accumulated depreciation		$ 2,100,000		$ 2,100,000
Marketable securities as a percentage of undepreciated assets				8.50%
Dividend income on investment in securities		3,515	$ 2,888	$ 7,882	$ 5,752
Purchase of securities available for sale				49,497	61,069
Net unrealized gain on securities portfolio	$ 24,700			51,800
Unrealized holding gains (losses) arising during the period		$ 15,568	$ 0	$ (27,059)	$ 0
UMH Properties, Inc [Member] \| Series B Cumulative Redeemable Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Available for sale securities, shares		100		100
Marketable REIT securities fair value				$ 2,600
Shares owned, cost		$ 2,500		$ 2,500
Dividend rate of preferred stock				8.00%
UMH Properties, Inc [Member] \| Common and Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Net unrealized gain on securities portfolio				$ 4,800
UMH Properties, Inc [Member] \| Common Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Marketable REIT securities fair value				$ 17,200
UMH common shares purchased during the quarter		34		34
Cost of securities purchased		$ 431		$ 431
Dividend reinvestment and stock purchase plan cost, per share		$ 12.68		$ 12.68
Shares owned by company		1,200		1,200
Shares owned, cost		$ 12,500		$ 12,500
Outstanding common shares, percentage		3.10%		3.10%