Subsequent Events	3 Months Ended
Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Investment activity. Subsequent to the end of the quarter, the Company committed capital of $238.8 million ($236.3 million of which was funded) of first mortgage loans. In addition the Company funded approximately $20.4 million for previously closed loans. Loan Repayments. Subsequent to the end of the quarter, the Company received approximately $71.9 million from loan repayments. DB Repurchase Facility. Subsequent to quarter end, on April 27, 2018, the Company, through an indirect wholly-owned subsidiary, entered into a Second Amended and Restated Master Repurchase Agreement (the "Second Amendment and Restatement") with Deutsche Bank AG, Cayman Islands Branch and Deutsche Bank AG, London Branch, amending and restating the repurchase facility with DB. The Second Amendment and Restatement provides for advances of up to $800.0 million for the sale and repurchase of eligible first mortgage loans secured by commercial or multifamily properties located in the United States, United Kingdom and the European Union, and enables the Company to elect to receive advances in either U.S. dollars, British pounds or Euros. The Second Amendment and Restatement has a maturity date of March 31, 2020 plus one one-year extension available at the Company's option, subject to certain conditions. Advances under the Second Amendment and Restatement accrue interest at a per annum pricing rate equal to the sum of (i) the applicable U.S. LIBOR, U.K. LIBOR or EURIBOR plus (ii) the applicable spread. Maximum advance rates under the Second Amendment and Restatement are determined on a transaction basis. Margin calls may occur any time at specified aggregate margin deficit thresholds. The Second Amendment and Restatement contains provisions regarding events of default that are customary for similar repurchase agreements. The Company has agreed to provide a guarantee of the obligations of the seller under the Second Amendment and Restatement. In connection with the Second Amendment and Restatement, the Company is subject to customary covenants, including continuing to operate in a manner that allows the Company to qualify as a REIT for federal income tax purposes and financial covenants with respect to minimum consolidated tangible net worth, maximum total indebtedness to consolidated tangible net worth, and minimum liquidity. After the Second Amendment and Restatement, the Company has $800.0 million of maximum borrowings and an asset specific financing of $55.1 million under the DB Repurchase Facility.

Subsequent Events

Investment activity. Subsequent to the end of the quarter, the Company committed capital of $238.8 million ($236.3 million of which was funded) of first mortgage loans.

In addition the Company funded approximately $20.4 million for previously closed loans.

Loan Repayments. Subsequent to the end of the quarter, the Company received approximately $71.9 million from loan repayments.

DB Repurchase Facility. Subsequent to quarter end, on April 27, 2018, the Company, through an indirect wholly-owned subsidiary, entered into a Second Amended and Restated Master Repurchase Agreement (the "Second Amendment and Restatement") with Deutsche Bank AG, Cayman Islands Branch and Deutsche Bank AG, London Branch, amending and restating the repurchase facility with DB. The Second Amendment and Restatement provides for advances of up to $800.0 million for the sale and repurchase of eligible first mortgage loans secured by commercial or multifamily properties located in the United States, United Kingdom and the European Union, and enables the Company to elect to receive advances in either U.S. dollars, British pounds or Euros. The Second Amendment and Restatement has a maturity date of March 31, 2020 plus one one-year extension available at the Company's option, subject to certain conditions. Advances under the Second Amendment and Restatement accrue interest at a per annum pricing rate equal to the sum of (i) the applicable U.S. LIBOR, U.K. LIBOR or EURIBOR plus (ii) the applicable spread. Maximum advance rates under the Second Amendment and Restatement are determined on a transaction basis. Margin calls may occur any time at specified aggregate margin deficit thresholds. The Second Amendment and Restatement contains provisions regarding events of default that are customary for similar repurchase agreements. The Company has agreed to provide a guarantee of the obligations of the seller under the Second Amendment and Restatement. In connection with the Second Amendment and Restatement, the Company is subject to customary covenants, including continuing to operate in a manner that allows the Company to qualify as a REIT for federal income tax purposes and financial covenants with respect to minimum consolidated tangible net worth, maximum total indebtedness to consolidated tangible net worth, and minimum liquidity. After the Second Amendment and Restatement, the Company has $800.0 million of maximum borrowings and an asset specific financing of $55.1 million under the DB Repurchase Facility.