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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Preferred Stock Preferred Stock 7.50% Series B Cumulative Redeemable - Liquidation Preference $25.00 per Share | Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Income
--- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2017 |  |  | 8,000,000 | 397,831,000 |  |  |
Balance at Dec. 31, 2017 |  | $ 3,261,636 | $ 80 | $ 3,978 | $ 3,227,304 | $ (578,950) | $ 609,224
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 83,395 |  |  |  | 83,395 |
Issuance of common stock, net of expenses (in shares) |  |  |  | 849,000 |  |  |
Issuance of common stock, net of expenses |  | 1,230 |  | $ 6 | 1,224 |  |
Repurchase of shares of common stock (in shares) | [1] |  |  | (251,000) |  |  |
Repurchase of shares of common stock | [1] | (1,957) |  |  | (1,957) |  |
Equity based compensation expense |  | 549 |  |  | 549 |  |
Accrued dividends attributable to stock-based awards |  | 430 |  |  | 430 |  |
Dividends declared on common stock ($0.20 per share) |  | (79,686) |  |  |  | (79,686) |
Dividends declared on preferred stock ($0.46875 per share) |  | (3,750) |  |  |  | (3,750) |
Dividends attributable to dividend equivalents |  | (217) |  |  |  | (217) |
Change in unrealized gains on MBS, net |  | (46,163) |  |  |  |  | (46,163)
Derivative hedging instrument fair value changes, net |  | 19,669 |  |  |  |  | 19,669
Balance (in shares) at Mar. 31, 2018 |  |  | 8,000,000 | 398,429,000 |  |  |
Balance at Mar. 31, 2018 |  | 3,235,431 | $ 80 | $ 3,984 | 3,227,550 | (578,913) | 582,730
Balance (in shares) at Dec. 31, 2017 |  |  | 8,000,000 | 397,831,000 |  |  |
Balance at Dec. 31, 2017 |  | 3,261,636 | $ 80 | $ 3,978 | 3,227,304 | (578,950) | 609,224
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 240,922 |  |  |  |  |
Dividends declared on preferred stock ($0.46875 per share) |  | (11,250) |  |  |  |  |
Balance (in shares) at Sep. 30, 2018 |  |  | 8,000,000 | 449,472,000 |  |  |
Balance at Sep. 30, 2018 |  | 3,552,240 | $ 80 | $ 4,495 | 3,620,268 | (598,971) | 526,368
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Adjustments related to tax withholding for share-based compensation |  |  |  | $ 2,000 |  |  |
Shares paid for tax withholding for share based compensation (in shares) |  |  |  | 250,946 |  |  |
Balance (in shares) at Mar. 31, 2018 |  |  | 8,000,000 | 398,429,000 |  |  |
Balance at Mar. 31, 2018 |  | 3,235,431 | $ 80 | $ 3,984 | 3,227,550 | (578,913) | 582,730
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 70,395 |  |  |  | 70,395 |
Issuance of common stock, net of expenses (in shares) |  |  |  | 104,000 |  |  |
Issuance of common stock, net of expenses |  | 481 |  | $ 1 | 480 |  |
Equity based compensation expense |  | 2,255 |  |  | 2,255 |  |
Accrued dividends attributable to stock-based awards |  | (230) |  |  | (230) |  |
Dividends declared on common stock ($0.20 per share) |  | (79,706) |  |  |  | (79,706) |
Dividends declared on preferred stock ($0.46875 per share) |  | (3,750) |  |  |  | (3,750) |
Dividends attributable to dividend equivalents |  | (244) |  |  |  | (244) |
Change in unrealized gains on MBS, net |  | (25,934) |  |  |  |  | (25,934)
Derivative hedging instrument fair value changes, net |  | 7,915 |  |  |  |  | 7,915
Balance (in shares) at Jun. 30, 2018 |  |  | 8,000,000 | 398,533,000 |  |  |
Balance at Jun. 30, 2018 |  | 3,206,613 | $ 80 | $ 3,985 | 3,230,055 | (592,218) | 564,711
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 87,132 |  |  |  | 87,132 |
Issuance of common stock, net of expenses (in shares) |  |  |  | 50,939,000 |  |  |
Issuance of common stock, net of expenses |  | 389,871 |  | $ 510 | 389,361 |  |
Equity based compensation expense |  | 1,082 |  |  | 1,082 |  |
Accrued dividends attributable to stock-based awards |  | (230) |  |  | (230) |  |
Dividends declared on common stock ($0.20 per share) |  | (89,894) |  |  |  | (89,894) |
Dividends declared on preferred stock ($0.46875 per share) |  | (3,750) |  |  |  | (3,750) |
Dividends attributable to dividend equivalents |  | (241) |  |  |  | (241) |
Change in unrealized gains on MBS, net |  | (43,733) |  |  |  |  | (43,733)
Derivative hedging instrument fair value changes, net |  | 5,390 |  |  |  |  | 5,390
Balance (in shares) at Sep. 30, 2018 |  |  | 8,000,000 | 449,472,000 |  |  |
Balance at Sep. 30, 2018 |  | 3,552,240 | $ 80 | $ 4,495 | 3,620,268 | (598,971) | 526,368
Balance (in shares) at Dec. 31, 2018 |  |  | 8,000,000 | 449,787,000 |  |  |
Balance at Dec. 31, 2018 |  | 3,416,101 | $ 80 | $ 4,498 | 3,623,275 | (632,040) | 420,288
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 88,857 |  |  |  | 88,857 |
Issuance of common stock, net of expenses (in shares) |  |  |  | 1,066,000 |  |  |
Issuance of common stock, net of expenses |  | 551 |  | $ 7 | 544 |  |
Repurchase of shares of common stock (in shares) | [2] |  |  | (370,000) |  |  |
Repurchase of shares of common stock | [2] | (2,610) |  |  | (2,610) |  |
Equity based compensation expense |  | 992 |  |  | 992 |  |
Accrued dividends attributable to stock-based awards |  | 435 |  |  | 435 |  |
Dividends declared on common stock ($0.20 per share) |  | (90,097) |  |  |  | (90,097) |
Dividends declared on preferred stock ($0.46875 per share) |  | (3,750) |  |  |  | (3,750) |
Dividends attributable to dividend equivalents |  | (256) |  |  |  | (256) |
Change in unrealized gains on MBS, net |  | 5,094 |  |  |  |  | 5,094
Derivative hedging instrument fair value changes, net |  | (10,786) |  |  |  |  | (10,786)
Balance (in shares) at Mar. 31, 2019 |  |  | 8,000,000 | 450,483,000 |  |  |
Balance at Mar. 31, 2019 |  | 3,404,531 | $ 80 | $ 4,505 | 3,622,636 | (637,286) | 414,596
Balance (in shares) at Dec. 31, 2018 |  |  | 8,000,000 | 449,787,000 |  |  |
Balance at Dec. 31, 2018 |  | 3,416,101 | $ 80 | $ 4,498 | 3,623,275 | (632,040) | 420,288
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | $ 277,496 |  |  |  |  |
Repurchase of shares of common stock (in shares) |  | 0 |  |  |  |  |
Dividends declared on preferred stock ($0.46875 per share) |  | $ (11,250) |  |  |  |  |
Balance (in shares) at Sep. 30, 2019 |  |  | 8,000,000 | 451,692,000 |  |  |
Balance at Sep. 30, 2019 |  | 3,403,426 | $ 80 | $ 4,517 | 3,634,140 | (637,161) | 401,850
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Adjustments related to tax withholding for share-based compensation |  |  |  | $ 2,600 |  |  |
Shares paid for tax withholding for share based compensation (in shares) |  |  |  | 370,244 |  |  |
Balance (in shares) at Mar. 31, 2019 |  |  | 8,000,000 | 450,483,000 |  |  |
Balance at Mar. 31, 2019 |  | 3,404,531 | $ 80 | $ 4,505 | 3,622,636 | (637,286) | 414,596
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 93,040 |  |  |  | 93,040 |
Issuance of common stock, net of expenses (in shares) |  |  |  | 139,000 |  |  |
Issuance of common stock, net of expenses |  | 586 |  | $ 1 | 585 |  |
Equity based compensation expense |  | 2,438 |  |  | 2,438 |  |
Accrued dividends attributable to stock-based awards |  | (260) |  |  | (260) |  |
Dividends declared on common stock ($0.20 per share) |  | (90,124) |  |  |  | (90,124) |
Dividends declared on preferred stock ($0.46875 per share) |  | (3,750) |  |  |  | (3,750) |
Dividends attributable to dividend equivalents |  | (276) |  |  |  | (276) |
Change in unrealized gains on MBS, net |  | 17,637 |  |  |  |  | 17,637
Derivative hedging instrument fair value changes, net |  | (20,449) |  |  |  |  | (20,449)
Balance (in shares) at Jun. 30, 2019 |  |  | 8,000,000 | 450,622,000 |  |  |
Balance at Jun. 30, 2019 |  | 3,403,373 | $ 80 | $ 4,506 | 3,625,399 | (638,396) | 411,784
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 95,599 |  |  |  | 95,599 |
Issuance of common stock, net of expenses (in shares) |  |  |  | 1,070,000 |  |  |
Issuance of common stock, net of expenses |  | 7,724 |  | $ 11 | 7,713 |  |
Equity based compensation expense |  | 1,288 |  |  | 1,288 |  |
Accrued dividends attributable to stock-based awards |  | (260) |  |  | (260) |  |
Dividends declared on common stock ($0.20 per share) |  | (90,338) |  |  |  | (90,338) |
Dividends declared on preferred stock ($0.46875 per share) |  | (3,750) |  |  |  | (3,750) |
Dividends attributable to dividend equivalents |  | (276) |  |  |  | (276) |
Change in unrealized gains on MBS, net |  | (9,016) |  |  |  |  | (9,016)
Derivative hedging instrument fair value changes, net |  | (918) |  |  |  |  | (918)
Balance (in shares) at Sep. 30, 2019 |  |  | 8,000,000 | 451,692,000 |  |  |
Balance at Sep. 30, 2019 |  | $ 3,403,426 | $ 80 | $ 4,517 | $ 3,634,140 | $ (637,161) | $ 401,850
[1] | For the nine months ended September 30, 2018, includes approximately $2.0 million (250,946 shares) surrendered for tax purposes related to equity-based compensation awards.
[2] | For the nine months ended September 30, 2019 includes approximately $2.6 million (370,244 shares) surrendered for tax purposes related to equity-based compensation awards.

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