Balance Sheets (Parentheticals) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment	$ 421,551,000	$ 272,042,000
Finite-Lived Intangible Assets, Accumulated Amortization	149,896,000	113,199,000
sales inducements accumulated amortization	3,567,000	1,833,000
Allowance for Doubtful Accounts Receivable	0	1,662,000
Below Market Lease, Accumulated Amortization	$ 21,677,000	$ 15,254,000
Common Stock, par value per share	$ 0.01
Common stock, shares outstanding	46,443,411
Series A Preferred Stock [Member]
Series A Redeemable Preferred Stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	3,050,000	3,050,000
Preferred stock, shares issued	2,161,000	1,674,000
Shares outstanding, preferred stock	2,028,000	1,608,000
Series A1 Preferred Stock [Domain]
Series A Redeemable Preferred Stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	5,000	0
Shares outstanding, preferred stock	5,000	0
Series M Preferred Stock [Member]
Series A Redeemable Preferred Stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	106,000	44,000
Shares outstanding, preferred stock	103,000	44,000
series M1 preferred stock [Domain]
Series A Redeemable Preferred Stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Shares outstanding, preferred stock	0	0
Common Stock [Member]
Common Stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	400,067,000	400,067,000
Common Stock, Shares, Issued	45,335,000	41,776,000
Common stock, shares outstanding	45,335,000	41,776,000
Line of Credit [Member]
Deferred loan costs, accumulated amortization	$ 849,000	$ 180,000
Mortgages [Member]
Deferred loan costs, accumulated amortization	$ 42,807,000	$ 40,127,000