Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income from loans and other investments
Interest and related income	$ 63,407	$ 33,656
Less: Interest and related expenses	24,161	12,074
Income from loans and other investments, net	39,246	21,582
Other expenses
Management and incentive fees	6,671	3,397
General and administrative expenses	7,663	3,199
Total other expenses	14,334	6,596
Unrealized gain (loss) on investments at fair value	17,476	(1,339)
Income from equity investments in unconsolidated subsidiaries	3,950
Income before income taxes	46,338	13,647
Income tax provision	245	531
Net income	46,093	13,116
Net income attributable to non-controlling interests	(10,700)	(51)
Net income attributable to Blackstone Mortgage Trust, Inc.	$ 35,393	$ 13,065
Net income per share of common stock
Basic	$ 0.60	$ 0.34
Diluted	$ 0.60	$ 0.34
Weighted-average shares of common stock outstanding
Basic	58,576,025	37,967,365
Diluted	58,576,025	37,967,365
Dividends Declared per share of common stock	$ 0.52	$ 0.48