Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 51,810	$ 52,342
Restricted cash	11,591	10,096
Loans receivable, net	4,428,500	2,047,223
Equity investments in unconsolidated subsidiaries	10,604	22,480
Accrued interest receivable, prepaid expenses, and other assets	86,016	80,639
Total assets	4,588,521	2,212,780
Liabilities and Equity
Accounts payable, accrued expenses, and other liabilities	61,013	97,153
Revolving repurchase facilities	2,040,783	863,622
Asset-specific repurchase agreements	324,553	245,731
Loan participations sold	499,433	90,000
Convertible notes, net	161,853	159,524
Total liabilities	3,087,635	1,456,030
Equity
Class A common stock, $0.01 par value, 100,000,000 shares authorized, 58,269,889 and 29,501,651 shares issued and outstanding as of December 31, 2014 and 2013, respectively	583	295
Additional paid-in capital	2,027,404	1,252,986
Accumulated other comprehensive (loss) income	(15,024)	798
Accumulated deficit	(547,592)	(536,170)
Total Blackstone Mortgage Trust, Inc. stockholders' equity	1,465,371	717,909
Non-controlling interests	35,515	38,841
Total equity	1,500,886	756,750
Total liabilities and equity	$ 4,588,521	$ 2,212,780