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Consolidated Statement Of Equity - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Cumulative Dividends In Excess Of Net Income [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | ---
Balance, shares at Dec. 31, 2016 | 39,847,860 | 39,847,860 |  |  |
Balance, value at Dec. 31, 2016 | $ 1,209,590 | $ 398 | $ 1,173,588 | $ 29,873 | $ 5,731
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net Income (Loss) Attributable to Parent | 121,566 |  |  | 121,566 | (8,450)
Comprehensive income | 113,116 |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments | (1,744) |  | (1,744) |  |
Stock Issued During Period, Shares, New Issues |  | 1,660,045 |  |  |
Stock Issued During Period, Value, New Issues | 122,198 | $ 17 | 122,181 |  |
Shares issued on stock options exercised, shares |  | 23,133 |  |  |
Adjustments Related to Tax Withholding for Share-based Compensation | (586) |  | (586) |  |
Share-based compensation | 2,270 |  | 2,270 |  |
Dividends declared, $1.54 per share | $ (117,177) |  |  | (117,177) |
Balance, shares at Sep. 30, 2017 | 41,531,038 | 41,531,038 |  |  |
Balance, value at Sep. 30, 2017 | $ 1,327,667 | $ 415 | $ 1,295,709 | $ 34,262 | $ (2,719)

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