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Consolidated Statement of Changes in Stockholders' Equity - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands | Total | Preferred Stock (Par Value: $0.01): | Common Stock (Par Value: $0.01): | Paid-in Capital in Excess of Par: | Retained Earnings: | Treasury Stock: | Accumulated Other Comprehensive Loss, Net of Tax:
--- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of year at Dec. 31, 2017 | $ 6,795,376 | $ 502,840 | $ 4,891 | $ 6,072,559 | $ 237,868 | $ (7,615) | $ (15,167)
Net income | 106,552 |  |  |  | 106,552 |  |
Purchase of common stock (126,483 shares) |  |  |  |  |  | (1,715) |
Issuance of preferred stock (515,000 shares) |  | 0 |  |  |  |  |
Other comprehensive income, net of tax | (40,615) |  |  |  |  |  | (40,615)
Dividends paid on common stock ($0.17 per share) |  |  |  |  | (83,242) |  |
Shares issued for restricted stock awards (1,366,969 shares) |  |  | 13 | (8,566) |  | 8,553 |
Dividends paid on preferred stock ($15.94 per share) | (8,207) |  |  |  | (8,207) |  |
Compensation expense related to restricted stock awards |  |  |  | 9,762 |  |  |
Effect of adopting | ASU 2016-01 |  |  |  |  | 260 |  |
Effect of adopting | ASU 2018-02 |  |  |  |  | 2,546 |  | (2,546)
Balance at end of period at Mar. 31, 2018 | $ 6,780,717 | $ 502,840 | $ 4,904 | $ 6,073,755 | $ 255,777 | $ (777) | $ (55,782)

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