Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ (10,175,063)	$ 72,570
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Amortization/accretion of available-for-sale securities premiums and discounts, net	1,403,431	(1,696,333)
Amortization of collateralized loan obligations discounts, net	186,128	0
Realized (gain) loss on sale of investments, net	33,345,288	9,468,552
Realized (gain) loss on derivative contracts, net	(25,984,870)	(3,686,125)
Realized (gain) loss on mortgage loans held-for-sale	0	423
Unrealized (gain) loss on fair value option securities	0	(9,448,270)
Unrealized (gain) loss on derivative contracts	5,349,613	8,890,363
Unrealized (gain) loss on mortgage loans held-for-sale	0	11,067
Unrealized (gain) loss on mortgage servicing rights	(1,141,752)	354,775
Unrealized (gain) loss on multi-family loans held in securitization trusts	6,818,922	(2,102,836)
Unrealized (gain) loss on residential loans held in securitization trusts	(5,650,199)	618,422
Restricted stock compensation expense	9,662	13,318
Net change in:
Accrued interest receivable	2,329,704	(857,702)
Deferred offering costs	24,766	9,007
Other assets	(106,022)	(344,553)
Accrued interest payable	(1,076,157)	78,250
Deferred income	87,732	(14,983)
Fees and expenses payable to Manager	432,996	(317,000)
Other accounts payable and accrued expenses	(47,217)	(1,913,871)
Net cash (used in) provided by operating activities	5,806,962	(864,926)
Cash flows from investing activities:
Purchase of available-for-sale securities	0	(486,979,999)
Purchase of commercial mortgage loans held-for-investment	(1,624,535)	0
Purchase of mortgage servicing rights	0	(10,910)
Proceeds from sales of available-for-sale securities	1,227,314,578	52,966,554
Net proceeds from (payments for) derivative contracts	25,984,870	3,685,913
Principal payments from available-for-sale securities	62,932,244	55,681,933
Principal payments from mortgage loans held-for-sale	0	42,101
Principal payments from commercial mortgage loans held-for-investment	20,405,000	0
Investment related receivable	(13,044,706)	(703,768)
Due from broker	(1,123,463)	40,836,375
Net cash (used in) provided by investing activities	1,262,623,696	(334,481,801)
Cash flows from financing activities:
Proceeds from issuance of common stock	7,278,201	19,903,641
Dividends paid on common stock	(3,735,676)	(5,261,777)
Dividends paid on preferred stock	(1,761,018)	(1,761,018)
Proceeds from repurchase agreements - available-for-sale securities	6,017,838,000	5,703,247,000
Purchase of Hunt CMT Equity LLC (net of $9,829,774 in restricted cash)	(58,220,292)	0
Principal repayments of repurchase agreements - available-for-sale securities	(7,252,360,000)	(5,361,430,000)
Net cash (used in) provided by financing activities	(1,232,740,493)	354,697,846
Net increase (decrease) in cash, cash equivalents and restricted cash	35,690,165	19,351,119
Cash, cash equivalents and restricted cash, beginning of period	45,622,602	37,889,596
Cash, cash equivalents and restricted cash, end of period	81,312,767	57,240,715
Supplemental disclosure of cash flow information
Cash paid for interest	10,340,281	6,903,389
Non-cash investing and financing activities information
Dividends declared but not paid at end of period	29,349	29,349
Net change in unrealized gain (loss) on available-for-sale securities	12,617,794	1,438,483
Consolidation of multi-family loans held in securitization trusts	23,949,942	1,179,880,650
Consolidation of residential loans held in securitization trusts	0	129,108,978
Consolidation of multi-family securitized debt obligations	19,561,943	1,159,436,081
Consolidation of residential securitized debt obligations	0	123,352,580
Commercial mortgage loans acquired, Hunt CMT Equity LLS acquisition	345,664,012	0
Restricted cash acquired, Hunt CMT Equity LLS acquisition	9,829,774	0
Other assets acquired, Hunt CMT Equity LLS acquisition	109,100	0
Collateralized loan obligations assumed, Hunt CMT Equity LLS acquisition	$ (287,552,820)	$ 0