Equity Method Investments - Balance Sheet Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Real estate assets	$ 267,811	$ 266,083
Cash and cash equivalents	8,348	13,360
TOTAL ASSETS	1,191,237	1,222,902
Liabilities:
Total Liabilities	199,656	205,070
Total Shareholders' Equity	991,581	1,017,832	$ 965,891	$ 911,208
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,191,237	$ 1,222,902
NexPoint Real Estate Finance Operating Partnership, L.P.
ASSETS
Investments	7,943,558
Real estate assets	59,072
Cash and cash equivalents	38,830
Other assets	1,106
TOTAL ASSETS	8,042,566
Liabilities:
Debt	1,275,290
Other liabilities	6,294,300
Total Liabilities	7,569,590
Redeemable noncontrolling interests in the operating company	95,712
Noncontrolling interests in consolidated VIEs	0
Total Shareholders' Equity	377,264
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	8,042,566
VineBrook
ASSETS
Investments	2,500
Real estate assets	3,566,053
Cash and cash equivalents	82,128
Other assets	95,365
TOTAL ASSETS	3,746,046
Liabilities:
Debt	2,622,755
Other liabilities	126,974
Total Liabilities	2,749,729
Redeemable noncontrolling interests in the operating company	467,290
Noncontrolling interests in consolidated VIEs	8,685
Total Shareholders' Equity	520,342
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	3,746,046
NexPoint Storage Partners, Inc.
ASSETS
Investments	0
Real estate assets	1,297,814
Cash and cash equivalents	9,751
Other assets	173,979
TOTAL ASSETS	1,481,544
Liabilities:
Debt	914,999
Other liabilities	397,768
Total Liabilities	1,312,767
Redeemable noncontrolling interests in the operating company	205,114
Noncontrolling interests in consolidated VIEs	4,035
Total Shareholders' Equity	(40,372)
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,481,544