Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income from loans and other investments
Interest and related income	$ 203,107	$ 146,446	$ 550,011	$ 391,787
Less: Interest and related expenses	97,955	67,891	255,677	168,917
Income from loans and other investments, net	105,152	78,555	294,334	222,870
Other expenses
Management and incentive fees	18,368	13,243	56,248	40,557
General and administrative expenses	8,443	7,419	25,897	22,219
Total other expenses	26,811	20,662	82,145	62,776
Income before income taxes	78,341	57,893	212,189	160,094
Income tax provision	48	83	272	265
Net income	78,293	57,810	211,917	159,829
Net income attributable to non-controlling interests	(128)	(88)	(481)	(88)
Net income attributable to Blackstone Mortgage Trust, Inc.	$ 78,165	$ 57,722	$ 211,436	$ 159,741
Net income per share of common stock basic and diluted	$ 0.67	$ 0.61	$ 1.90	$ 1.68
Weighted-average shares of common stock outstanding, basic and diluted	116,203,140	95,013,087	111,251,864	95,004,188
Dividends declared per share of common stock	$ 0.62	$ 0.62	$ 1.86	$ 1.86