Stockholders' Equity	3 Months Ended
Mar. 31, 2019
Stockholders Equity Note [Abstract]
Stockholders' Equity	(12) Stockholders’ Equity Equity Distribution Agreement On March 7, 2019, the Company and the Manager entered into an equity distribution agreement with each of Citigroup Global Markets Inc., J.P. Morgan Securities LLC, JMP Securities LLC, Wells Fargo Securities, LLC and TPG Capital BD, LLC (each a “Sales Agent” and, collectively, the “Sales Agents”) relating to the issuance and sale by the Company of shares of its common stock, $0.001 par value per share, pursuant to a continuous offering program. In accordance with the terms of the equity distribution agreement, the Company may, at its discretion and from time to time, offer and sell shares of its common stock having an aggregate gross sales price of up to $125.0 million through the Sales Agents, each acting as the Company’s agent. The offering of shares of the Company’s common stock pursuant to the equity distribution agreement will terminate upon the earlier of (1) the sale of shares of the Company’s common stock subject to the equity distribution agreement having an aggregate gross sales price of $125.0 million and (2) the termination of the equity distribution agreement by the Sales Agents or the Company at any time as set forth in the equity distribution agreement. Each Sales Agent will be entitled to commissions in an amount not to exceed 1.75% of the gross sales prices of shares of the Company’s common stock sold through it, as the Company’s agent. For the three months ended March 31, 2019, no shares of common stock were sold pursuant to the equity distribution agreement. Common Stock Issuance On March 19, 2019, the Company completed a common stock offering of 6.0 million shares at a price to the underwriters of $19.80 per share, generating net proceeds of $118.8 million, after underwriting discounts. The Manager reimbursed offering costs of $0.3 million. The Company intends to use the proceeds from the offering to originate or acquire commercial mortgage loans consistent with its investment strategy and investment guidelines. 10b5-1 Purchase Plan The Company entered into an agreement and related amendments (the “10b5-1 Purchase Plan”) with Goldman Sachs & Co. LLC, as our agent, to buy in the open market up to $35.0 million in shares of our common stock in the aggregate during the period beginning on or about August 21, 2017 and ending 12 months thereafter or, if sooner, the date on which all the capital committed has been exhausted. On August 1, 2018, the Company’s Board of Directors authorized the Company to extend the repurchase period for the remaining capital committed to the 10b5-1 Purchase Plan. No other changes to the terms of the 10b5-1 Purchase Plan were authorized. Under the amended 10b5-1 Purchase Plan, the repurchase period was extended to February 28, 2019 or, if sooner, the date on which all the capital committed to the 10b5-1 Purchase Plan has been exhausted. The 10b5-1 Purchase Plan requires Goldman Sachs & Co. LLC to purchase for us shares of our common stock when the market price per share is below the threshold price specified in the 10b5-1 Purchase Plan which is based on our book value per common share. During the three months ended March 31, 2019, the Company repurchased 2,324 shares of common stock, at a weighted average price of $18.27 per share, for total consideration (including commissions and related fees) of $0.04 million. The 10b5-1 Purchase Plan expired by its terms on February 28, 2019. Dividends Upon the approval of the Company’s Board of Directors, dividends are accrued by the Company. Dividends are paid first to the holders of the Company’s Series A preferred stock at the rate of 12.5% of the total $0.001 million liquidation preference per annum plus all accumulated and unpaid dividends thereon, and then to the holders of the Company’s common stock and Class A common stock. The Company intends to distribute each year substantially all of its taxable income to its stockholders to comply with the REIT provisions of the Internal Revenue Code of 1986, as amended. Preferred Stock During the three months ended March 31, 2019, a subsidiary of the Company issued 125 shares of Series A preferred stock for proceeds of $0.1 million. On February 28, 2018, the Company’s previously issued shares of Series A preferred stock were redeemed for $0.1 million. Common and Class A Common Stock On March 19, 2019, the Company’s Board of Directors declared a dividend for the first quarter of 2019 in the amount of $0.43 per share of common stock and Class A common stock, or $31.6 million in the aggregate, which dividend was payable on April 25, 2019 to holders of record of our common stock and Class A common stock as of March 29, 2019. On March 19, 2018, the Company declared a dividend for the first quarter of 2018 in the amount of $0.42 per share of common stock and Class A common stock, or $25.3 million in the aggregate, which was paid on April 25, 2018 to holders of record of our common stock and Class A common stock as of March 29, 2018. For the three months ended March 31, 2019 and 2018, common stock and Class A common stock dividends in the amount of $31.6 million and $25.3 million were declared and approved, respectively. As of March 31, 2019 and December 31, 2018, $31.6 million and $29.0 million, respectively, remain unpaid and are reflected in dividends payable on the Company’s consolidated balance sheets. Other Comprehensive (Loss) Income For the three months ended March 31, 2019 and 2018, other comprehensive (loss) income was $0.1 million and $(0.2) million, respectively. Other comprehensive (loss) income is a result of unrealized (losses) gains on available-for-sale securities (CMBS and CRE CLO investments held at period end).

Stockholders' Equity

3 Months Ended

Mar. 31, 2019

(12) Stockholders’ Equity

Equity Distribution Agreement

On March 7, 2019, the Company and the Manager entered into an equity distribution agreement with each of Citigroup Global Markets Inc., J.P. Morgan Securities LLC, JMP Securities LLC, Wells Fargo Securities, LLC and TPG Capital BD, LLC (each a “Sales Agent” and, collectively, the “Sales Agents”) relating to the issuance and sale by the Company of shares of its common stock, $0.001 par value per share, pursuant to a continuous offering program. In accordance with the terms of the equity distribution agreement, the Company may, at its discretion and from time to time, offer and sell shares of its common stock having an aggregate gross sales price of up to $125.0 million through the Sales Agents, each acting as the Company’s agent. The offering of shares of the Company’s common stock pursuant to the equity distribution agreement will terminate upon the earlier of (1) the sale of shares of the Company’s common stock subject to the equity distribution agreement having an aggregate gross sales price of $125.0 million and (2) the termination of the equity distribution agreement by the Sales Agents or the Company at any time as set forth in the equity distribution agreement.

Each Sales Agent will be entitled to commissions in an amount not to exceed 1.75% of the gross sales prices of shares of the Company’s common stock sold through it, as the Company’s agent. For the three months ended March 31, 2019, no shares of common stock were sold pursuant to the equity distribution agreement.

Common Stock Issuance

On March 19, 2019, the Company completed a common stock offering of 6.0 million shares at a price to the underwriters of $19.80 per share, generating net proceeds of $118.8 million, after underwriting discounts. The Manager reimbursed offering costs of $0.3 million. The Company intends to use the proceeds from the offering to originate or acquire commercial mortgage loans consistent with its investment strategy and investment guidelines.

10b5-1 Purchase Plan

The Company entered into an agreement and related amendments (the “10b5-1 Purchase Plan”) with Goldman Sachs & Co. LLC, as our agent, to buy in the open market up to $35.0 million in shares of our common stock in the aggregate during the period beginning on or about August 21, 2017 and ending 12 months thereafter or, if sooner, the date on which all the capital committed has been exhausted. On August 1, 2018, the Company’s Board of Directors authorized the Company to extend the repurchase period for the remaining capital committed to the 10b5-1 Purchase Plan. No other changes to the terms of the 10b5-1 Purchase Plan were authorized. Under the amended 10b5-1 Purchase Plan, the repurchase period was extended to February 28, 2019 or, if sooner, the date on which all the capital committed to the 10b5-1 Purchase Plan has been exhausted.

The 10b5-1 Purchase Plan requires Goldman Sachs & Co. LLC to purchase for us shares of our common stock when the market price per share is below the threshold price specified in the 10b5-1 Purchase Plan which is based on our book value per common share. During the three months ended March 31, 2019, the Company repurchased 2,324 shares of common stock, at a weighted average price of $18.27 per share, for total consideration (including commissions and related fees) of $0.04 million. The 10b5-1 Purchase Plan expired by its terms on February 28, 2019.

Dividends

Upon the approval of the Company’s Board of Directors, dividends are accrued by the Company. Dividends are paid first to the holders of the Company’s Series A preferred stock at the rate of 12.5% of the total $0.001 million liquidation preference per annum plus all accumulated and unpaid dividends thereon, and then to the holders of the Company’s common stock and Class A common stock. The Company intends to distribute each year substantially all of its taxable income to its stockholders to comply with the REIT provisions of the Internal Revenue Code of 1986, as amended.

Preferred Stock

During the three months ended March 31, 2019, a subsidiary of the Company issued 125 shares of Series A preferred stock for proceeds of $0.1 million. On February 28, 2018, the Company’s previously issued shares of Series A preferred stock were redeemed for $0.1 million.

Common and Class A Common Stock

On March 19, 2019, the Company’s Board of Directors declared a dividend for the first quarter of 2019 in the amount of $0.43 per share of common stock and Class A common stock, or $31.6 million in the aggregate, which dividend was payable on April 25, 2019 to holders of record of our common stock and Class A common stock as of March 29, 2019. On March 19, 2018, the Company declared a dividend for the first quarter of 2018 in the amount of $0.42 per share of common stock and Class A common stock, or $25.3 million in the aggregate, which was paid on April 25, 2018 to holders of record of our common stock and Class A common stock as of March 29, 2018.

For the three months ended March 31, 2019 and 2018, common stock and Class A common stock dividends in the amount of $31.6 million and $25.3 million were declared and approved, respectively.

As of March 31, 2019 and December 31, 2018, $31.6 million and $29.0 million, respectively, remain unpaid and are reflected in dividends payable on the Company’s consolidated balance sheets.

Other Comprehensive (Loss) Income

For the three months ended March 31, 2019 and 2018, other comprehensive (loss) income was $0.1 million and $(0.2) million, respectively. Other comprehensive (loss) income is a result of unrealized (losses) gains on available-for-sale securities (CMBS and CRE CLO investments held at period end).