Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ 347,046,000	$ 2,042,000
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent and amortization of intangible assets, liabilities and lease inducements	(2,019,000)	(3,246,000)
Depreciation and amortization	21,995,000	39,783,000
Reclassification from AOCI to interest expense	(1,806,000)	(320,000)
Reclassification from other assets to interest expense for swap termination	1,421,000	0
Change in fair value of swaps	209,000	70,000
Gain on sale of real estate	(433,104,000)	0
Impairment of real estate	69,000,000	0
Loss on early extinguishment of debt	29,982,000	0
Straight-line rent expense	0	(18,000)
Amortization of deferred loan costs	864,000	639,000
Amortization of premiums and discounts on debt	(150,000)	(111,000)
Unrealized premium adjustment	1,293,000	1,946,000
Amortization and accretion on loans receivable, net	(250,000)	(228,000)
Bad debt expense	73,000	222,000
Deferred income taxes	(76,000)	62,000
Stock-based compensation	138,000	124,000
Loans funded, held for sale to secondary market	(20,566,000)	(39,990,000)
Proceeds from sale of guaranteed loans	29,716,000	41,408,000
Principal collected on loans subject to secured borrowings	2,477,000	1,642,000
Other operating activity	(581,000)	(1,079,000)
Changes in operating assets and liabilities:
Accounts receivable and interest receivable	1,604,000	5,390,000
Other assets	3,101,000	(1,820,000)
Accounts payable and accrued expenses	(3,224,000)	2,137,000
Deferred leasing costs	(1,296,000)	(1,922,000)
Other liabilities	(7,956,000)	1,046,000
Due to related parties	(4,292,000)	2,024,000
Net cash provided by operating activities	33,599,000	49,801,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to investments in real estate	(19,946,000)	(10,139,000)
Acquisition of real estate	0	(112,048,000)
Proceeds from sale of real estate, net	941,032,000	0
Loans funded	(6,855,000)	(13,330,000)
Principal collected on loans	5,916,000	8,501,000
Other investing activity	354,000	124,000
Net cash provided by (used in) investing activities	920,501,000	(126,892,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment of unsecured revolving lines of credit, revolving credit facility and or term note	(135,500,000)	0
Proceeds from unsecured revolving lines of credit, revolving credit facility and or term note	74,000,000	0
Payment of mortgages payable	(46,000,000)	0
Investments in marketable securities in connection with the legal defeasance of mortgages payable	(268,194,000)	0
Prepayment penalties and other payments for early extinguishment of debt	(5,660,000)	0
Payment of principal on SBA 7(a) loan-backed notes	(7,625,000)	(3,239,000)
Proceeds from SBA 7(a) loan-backed notes	0	38,200,000
Payment of principal on secured borrowings	(2,477,000)	(1,642,000)
Proceeds from secured borrowings	0	772,000
Payment of deferred preferred stock offering costs	(497,000)	(1,124,000)
Payment of deferred loan costs	(34,000)	(1,112,000)
Payment of other deferred costs	(383,000)	(22,000)
Payment of common dividends	(12,045,000)	(16,421,000)
Payment of special cash dividends	(613,294,000)	(1,575,000)
Net proceeds from issuance of Series A Preferred Warrants	295,000	62,000
Net proceeds from issuance of Series A Preferred Stock	28,535,000	26,984,000
Payment of preferred stock dividends	(17,095,000)	(1,404,000)
Redemption of Series A Preferred Stock	(156,000)	(75,000)
Retirement of fractional shares of Common Stock	(1,000)	0
Noncontrolling interests' distributions	(515,000)	(67,000)
Noncontrolling interests' contributions	455,000	0
Net cash (used in) provided by financing activities	(1,006,191,000)	39,337,000
Change in cash balances included in assets held for sale	755,000	0
NET DECREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	(51,336,000)	(37,754,000)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	77,443,000	156,318,000
End of period	26,107,000	118,564,000
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH TO THE CONSOLIDATED BALANCE SHEETS:
Total cash and cash equivalents and restricted cash	77,443,000	156,318,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest	10,788,000	20,240,000
Federal income taxes paid	850,000	622,000
SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Additions to investments in real estate included in accounts payable and accrued expenses	3,275,000	11,690,000
Net increase in fair value of derivatives applied to other comprehensive income	0	1,727,000
Additions to deferred costs included in accounts payable and accrued expenses	344,000	993,000
Additions to preferred stock offering costs included in accounts payable and accrued expenses	467,000	148,000
Preferred stock offering costs offset against redeemable preferred stock in temporary equity	249,000	187,000
Preferred stock offering costs offset against redeemable preferred stock in permanent equity	3,000	0
Reclassification of Series A Preferred Stock from temporary equity to permanent equity	26,729,000	11,517,000
Reclassification of loans receivable, net to real estate owned	243,000	0
Reclassification of Series A Preferred Stock from temporary equity to accounts payable and accrued expenses	0	4,000
Establishment of right-of use asset and lease liability	362,000	0
Marketable securities transferred in connection with the legal defeasance of mortgages payable	268,194,000	0
Mortgage notes payable legally defeased	245,000,000	0
Mortgage note assumed in connection with our sale of real estate	$ 28,200,000	$ 0