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Consolidated Statements of Changes in Stockholders' Equity - 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 (ACCUMULATED DEFICIT): | TREASURY STOCK: | ACCUMULATED OTHER COMPREHENSIVE LOSS, NET OF TAX:
--- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of year at Dec. 31, 2014 |  |  |  |  | $ 5,369,623 | $ 464,569 | $ (1,118) | $ (55,686)
Net income (loss) |  | $ (47,156) |  |  |  | (47,156) |  |
Purchase of common stock (1,284,373; 566,584; and 448,223 shares, respectively) |  |  |  |  |  |  | (7,020) |
Other comprehensive income (loss), net of tax |  | (1,335) |  |  |  |  |  | (1,335)
Shares issued for restricted stock awards (2,004,212; 2,099,865; and 1,683,564, respectively) |  |  |  | $ 17 | (7,708) |  | 7,691 |
Dividends paid on common stock ($0.68; $0.68; and $1.00 per share) |  |  |  |  |  | (453,981) |  |
Compensation expense related to restricted stock awards |  |  |  |  | 30,205 |  |  |
Issuance of preferred stock (515,000 shares) |  |  |  | 406 | 629,276 |  |  |
Tax effect of stock plans |  | 2,486 |  |  | 2,486 |  |  |
Balance at end of year at Dec. 31, 2015 |  | 5,934,696 |  | 4,850 | 6,023,882 | (36,568) | (447) | (57,021)
Net income (loss) |  | 495,401 |  |  |  | 495,401 |  |
Purchase of common stock (1,284,373; 566,584; and 448,223 shares, respectively) |  |  |  |  |  |  | (8,677) |
Other comprehensive income (loss), net of tax |  | 308 |  |  |  |  |  | 308
Shares issued for restricted stock awards (2,004,212; 2,099,865; and 1,683,564, respectively) |  |  |  | 21 | (8,985) |  | 8,964 |
Dividends paid on common stock ($0.68; $0.68; and $1.00 per share) |  |  |  |  |  | (330,810) |  |
Compensation expense related to restricted stock awards |  |  |  |  | 32,661 |  |  |
Effect of adopting Accounting Standards Update | ASU No. 2016-09 | [1] |  |  |  |  | 412 |  |
Balance at end of year at Dec. 31, 2016 |  | 6,123,991 |  | 4,871 | 6,047,558 | 128,435 | (160) | (56,713)
Net income (loss) |  | 466,201 |  |  |  | 466,201 |  |
Purchase of common stock (1,284,373; 566,584; and 448,223 shares, respectively) |  |  |  |  |  |  | (18,463) |
Other comprehensive income (loss), net of tax |  | 41,546 |  |  |  |  |  | 41,546
Shares issued for restricted stock awards (2,004,212; 2,099,865; and 1,683,564, respectively) |  |  |  | 20 | (11,028) |  | 11,008 |
Dividends paid on common stock ($0.68; $0.68; and $1.00 per share) |  |  |  |  |  | (332,147) |  |
Compensation expense related to restricted stock awards |  |  |  |  | 36,029 |  |  |
Dividends paid on preferred stock ($47.81 per share) |  | (24,621) |  |  |  | (24,621) |  |
Issuance of preferred stock (515,000 shares) |  |  | $ 502,840 |  |  |  |  |
Balance at end of year at Dec. 31, 2017 |  | $ 6,795,376 | $ 502,840 | $ 4,891 | $ 6,072,559 | $ 237,868 | $ (7,615) | $ (15,167)
[1] | See Note 2, "Summary of Significant Accounting Policies" for a discussion of the Company's adoption of Accounting Standards Update No. 2016-09.

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