Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income from loans and other investments
Interest and related income	$ 882,679	$ 756,109	$ 537,915
Less: Interest and related expenses	458,503	359,625	234,870
Income from loans and other investments, net	424,176	396,484	303,045
Other expenses
Management and incentive fees	78,435	74,834	54,841
General and administrative expenses	38,854	35,529	29,922
Total other expenses	117,289	110,363	84,763
Income before income taxes	306,887	286,121	218,282
Income tax (benefit) provision	(506)	308	314
Net income	307,393	285,813	217,968
Net income attributable to non-controlling interests	(1,826)	(735)	(337)
Net income attributable to Blackstone Mortgage Trust, Inc.	$ 305,567	$ 285,078	$ 217,631
Net income per share of common stock basic and diluted	$ 2.35	$ 2.50	$ 2.27
Weighted-average shares of common stock outstanding, basic and diluted	130,085,398	113,857,238	95,963,616