Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income from loans and other investments
Interest and related income	$ 191,982	$ 223,369	$ 396,857	$ 448,128
Less: Interest and related expenses	84,853	116,891	189,092	235,579
Income from loans and other investments, net	107,129	106,478	207,765	212,549
Other expenses
Management and incentive fees	20,496	20,984	39,773	40,774
General and administrative expenses	11,286	9,897	23,078	19,210
Total other expenses	31,782	30,881	62,851	59,984
Increase in current expected credit loss reserve	(56,819)		(179,521)
Income (loss) before income taxes	18,528	75,597	(34,607)	152,565
Income tax provision	23	46	173	147
Net income (loss)	18,505	75,551	(34,780)	152,418
Net income attributable to non-controlling interests	(961)	(377)	(1,028)	(680)
Net income (loss) attributable to Blackstone Mortgage Trust, Inc.	$ 17,544	$ 75,174	$ (35,808)	$ 151,738
Net income (loss) per share of common stock basic and diluted	$ 0.13	$ 0.59	$ (0.26)	$ 1.21
Weighted-average shares of common stock outstanding, basic and diluted	138,299,418	126,475,244	136,959,341	125,410,064