Stockholders' Equity Noncontrolling Interest (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Nov. 01, 2017 |
Dec. 31, 2017 |
Jun. 28, 2017 |
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| Equity [Abstract] | |||
| Shares of Granite Point Mortgage Trust Inc. common stock received in exchange for contribution (in shares) | 33,100,000 | ||
| Ownership percentage in Granite Point Mortgage Trust Inc. | 76.50% | ||
| Shares issued by Granite Point Mortgage Trust Inc. in initial public offering (in shares) | 10,000,000 | ||
| Price per share issued by Granite Point Mortgage Trust Inc. in initial public offering (in usd per share) | $ 19.50 | ||
| Net proceeds received by Granite Point Mortgage Trust Inc. in initial public offering | $ 195,000 | ||
| Gross proceeds received by Granite Point Mortgage Trust Inc. in initial public offering | 181,900 | ||
| Issuance costs incurred by Granite Point Mortgage Trust Inc. in initial public offering | $ 13,100 | ||
| Number of shares of common stock of Granite Point Mortgage Trust Inc distributed via special dividend (in shares) | 33,100,000 |
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- Definition Special dividend distributed to shareholders during the period. No definition available.
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- Definition Issuance costs incurred on stock transaction. No definition available.
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- References No definition available.
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- Definition Balance held at close of period in number of shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
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- Definition Cash received on stock transaction after deduction of issuance costs. No definition available.
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- Definition Amount of consideration received by subsidiary or equity investee in exchange for shares of stock issued or sold. Includes amount of cash received, fair value of noncash assets received, and fair value of liabilities assumed by the investor. No definition available.
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- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. No definition available.
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- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
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