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Consolidated Statements of Equity - USD ($) $ in Thousands | Total | Preferred stock | Common stock | Additional paid-in capital | Retained earnings | Accumulated other comprehensive loss | Treasury stock
--- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) |  | 150,000 |  |  |  |  |
Balance (in shares) |  |  | 195,843,297 |  |  |  |
Treasury stock (in shares) |  |  |  |  |  |  | (538,921)
Balance at Dec. 31, 2016 | $ 2,316,244 | $ 15,000 | $ 195,843 | $ 1,232,478 | $ 912,282 | $ (35,733) | $ (3,626)
Net Income |  |  |  |  | 37,325 |  |
Net Income | 37,325 |  |  |  |  |  |
Other comprehensive income | (452) |  |  |  |  | (452) |
Dividends declared on preferred stocks | (171) |  |  |  | (171) |  |
Dividends declared on common stock | (37,596) |  |  |  | (37,596) |  |
Stock-based compensation | 996 |  |  | 1,134 | (138) |  |
Repurchase of common stock |  |  |  |  |  |  | (64,384)
Repurchase of common stock | (1,684) |  |  |  |  |  | $ (1,684)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings |  |  |  | (2,441) |  |  |
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings (in shares) |  |  |  |  |  |  | 64,384
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings |  |  |  |  |  |  | $ 1,684
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings | (757) |  |  |  |  |  |
Balance at Mar. 31, 2017 | $ 2,313,905 | $ 15,000 | $ 195,843 | 1,231,171 | 911,702 | (36,185) | $ (3,626)
Balance (in shares) |  | 150,000 |  |  |  |  |
Balance (in shares) | 195,843,297 |  | 195,843,297 |  |  |  |
Treasury stock (in shares) | (538,921) |  |  |  |  |  | (538,921)
Balance (in shares) | 195,843,297 |  | 195,843,297 |  |  |  |
Treasury stock (in shares) | (538,921) |  |  |  |  |  | (538,921)
Cumulative effect of adoption of ASU 2014-09 | Accounting Standards Update 2014-09 | $ (970) |  |  |  | (970) |  |
Adjusted balance at January 1, 2018 | 2,428,073 |  | $ 195,843 | 1,233,412 | 1,039,778 | (37,334) | $ (3,626)
Balance at Dec. 31, 2017 | 2,429,043 |  | 195,843 | 1,233,412 | 1,040,748 | (37,334) | $ (3,626)
Net Income |  |  |  |  | 42,437 |  |
Net Income | 42,437 |  |  |  |  |  |
Other comprehensive income | 433 |  |  |  |  | 433 |
Reclassification of certain prior period tax effects from accumulated other comprehensive loss | Adjustments for new accounting pronouncement | (7,900) |  |  |  | 7,959 | (7,959) |
Dividends declared on common stock | (38,572) |  |  |  | (38,572) |  |
Stock-based compensation | 1,090 |  |  | 1,223 | (133) |  |
Repurchase of common stock |  |  |  |  |  |  | (182,424)
Repurchase of common stock | (5,020) |  |  |  |  |  | $ (5,020)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings |  |  |  | (7,350) |  |  |
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings (in shares) |  |  |  |  |  |  | 182,424
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings |  |  |  |  |  |  | $ 5,020
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings | (2,330) |  |  |  |  |  |
Balance at Mar. 31, 2018 | $ 2,426,111 |  | $ 195,843 | $ 1,227,285 | $ 1,051,469 | $ (44,860) | $ (3,626)
Balance (in shares) | 195,843,297 |  | 195,843,297 |  |  |  |
Treasury stock (in shares) | (538,921) |  |  |  |  |  | (538,921)

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