Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income/(loss)	$ 43,839	$ (22,507)
Amounts related to available for sale real estate securities:
Change in net unrealized gain/(loss)	(1,648)	0
Reclassification adjustment for amounts included in net income/(loss)	(677)	0
Total unrealized gain (loss)	(2,325)	0
Amounts related to cash flow hedges:
Change in net unrealized gain/(loss)	0	(220)
Reclassification adjustment for amounts included in net income/(loss)	0	282
Total unrealized gain (loss)	0	62
Comprehensive (income)/loss attributed to non-controlling interest	(9)	0
Comprehensive income/(loss) attributable to Franklin BSP Realty Trust, Inc.	$ 41,505	$ (22,445)