Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income from loans and other investments
Interest and related income	$ 33,656	$ 1,456
Less: Interest and related expenses	12,074	777
Income from loans and other investments, net	21,582	679
Other expenses
Management fees	3,397	63
General and administrative expenses	3,199	1,975
Total other expenses	6,596	2,038
Valuation allowance on loans held-for-sale		(200)
Loss on investments at fair value	(1,339)
Income (loss) before income taxes	13,647	(1,559)
Income tax provision	531	38
Net income (loss)	13,116	(1,597)
Net income attributable to non-controlling interests	(51)	(1,518)
Net income (loss) attributable to Blackstone Mortgage Trust, Inc.	$ 13,065	$ (3,115)
Net income (loss) per share of common stock
Basic	$ 0.34	$ (1.03)
Diluted	$ 0.34	$ (1.03)
Weighted-average shares of common stock outstanding
Basic	37,967,365	3,016,425
Diluted	37,967,365	3,016,425
Dividends declared per share of common stock	$ 0.48