Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Property revenues	$ 3,306,722	$ 4,994,868	$ 7,036,500	$ 10,068,972
Investment income	12,174,215	9,009,907	23,644,401	18,167,141
Contingent interest income	86,567	45,000	219,217	219,396
Other interest income	666,796	883,346	1,311,933	1,397,471
Other income			62,637
Total revenues	16,234,300	14,933,121	32,274,688	29,852,980
Expenses:
Real estate operating (exclusive of items shown below)	1,621,084	2,369,455	4,105,300	5,006,132
Impairment charge		61,506		61,506
Depreciation and amortization	1,270,379	1,806,732	2,863,205	3,931,630
Amortization of deferred financing costs	562,585	392,493	1,302,823	924,680
Interest expense	5,841,327	4,322,054	11,283,580	9,092,189
General and administrative	2,876,450	2,764,981	6,007,330	5,097,352
Total expenses	12,171,825	11,717,221	25,562,238	24,113,489
Other Income:
Gain (loss) on sale of real estate assets	(16,075)	12,442,929	7,152,512	12,442,929
Gain on sale of securities				8,097
Income before income taxes	4,046,400	15,658,829	13,864,962	18,190,517
Income tax expense (benefit)	(63,000)	4,653,000	2,395,047	4,653,000
Net income	4,109,400	11,005,829	11,469,915	13,537,517
Net income (loss) attributable to noncontrolling interest		(101)	71,653	(113)
Partnership net income	4,109,400	11,005,930	11,398,262	13,537,630
Redeemable Series A preferred unit distributions and accretion	(432,550)	(124,982)	(757,192)	(126,666)
Net income available to Partners	3,676,850	10,880,948	10,641,070	13,410,964
Net income (loss) available to Partners and noncontrolling interest allocated to:
General Partner	35,139	2,121,913	1,182,211	2,189,068
Net income (loss) attributable to noncontrolling interest		(101)	71,653	(113)
Net income available to Partners and noncontrolling interest	$ 3,676,850	$ 10,880,847	$ 10,712,723	$ 13,410,851
Unitholdersʼ interest in net income per unit (basic and diluted):
Net income per unit, basic and diluted	$ 0.06	$ 0.15	$ 0.16	$ 0.19
Distributions declared, per unit	$ 0.125	$ 0.125	$ 0.25	$ 0.25
Weighted average number of units outstanding, basic	59,862,969	60,252,928	59,950,328	60,252,928
Weighted average number of units outstanding, diluted	59,862,969	60,252,928	59,950,328	60,252,928
Unitholders [Member]
Net income (loss) available to Partners and noncontrolling interest allocated to:
Limited Partners	$ 3,594,529	$ 8,759,035	$ 9,389,231	$ 11,221,896
Restricted Unitholders [Member]
Net income (loss) available to Partners and noncontrolling interest allocated to:
Limited Partners	$ 47,182		$ 69,628