Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income from loans and other investments
Interest and related income	$ 191,479	$ 126,825	$ 346,904	$ 245,341
Less: Interest and related expenses	87,733	54,352	157,722	101,026
Income from loans and other investments, net	103,746	72,473	189,182	144,315
Other expenses
Management and incentive fees	22,388	14,393	37,880	27,314
General and administrative expenses	8,747	7,373	17,454	14,800
Total other expenses	31,135	21,766	55,334	42,114
Income before income taxes	72,611	50,707	133,848	102,201
Income tax provision	104	94	224	183
Net income	72,507	50,613	133,624	102,018
Net income attributable to non-controlling interests	(195)		(353)
Net income attributable to Blackstone Mortgage Trust, Inc.	$ 72,312	$ 50,613	$ 133,271	$ 102,018
Net income per share of common stock basic and diluted	$ 0.66	$ 0.53	$ 1.23	$ 1.07
Weighted-average shares of common stock outstanding, basic and diluted	109,069,078	95,005,873	108,735,193	94,999,664
Dividends declared per share of common stock	$ 0.62	$ 0.62	$ 1.24	$ 1.24