Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income from loans and other investments
Interest and related income	$ 497,974	$ 410,635	$ 184,766
Less: Interest and related expenses	184,270	152,416	69,143
Income from loans and other investments, net	313,704	258,219	115,623
Other expenses
Management and incentive fees	55,959	42,886	19,491
General and administrative expenses	27,716	36,709	27,799
Total other expenses	83,675	79,595	47,290
Gain on investments at fair value	13,420	21,967	13,258
Income from equity investment in unconsolidated subsidiary	3,187	11,798	28,036
Loss on deconsolidation of subsidiary			(8,615)
Income before income taxes	246,636	212,389	101,012
Income tax provision	196	504	518
Net income	246,440	211,885	100,494
Net income attributable to non-controlling interests	(8,143)	(15,056)	(10,449)
Net income attributable to Blackstone Mortgage Trust, Inc.	$ 238,297	$ 196,829	$ 90,045
Net income per share of common stock basic and diluted	$ 2.53	$ 2.41	$ 1.86
Weighted-average shares of common stock outstanding, basic and diluted	94,165,351	81,740,227	48,394,478