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Consolidated Statement of Changes in Equity (USD $) In Thousands, except Share data | Total | Common Stock | Additional Capital | Retained Earnings | Accumulated Other Comprehensive Income | Treasury Stock | Non-controlling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Opening Balance, at Dec. 31, 2010 | $ 343,776 | $ 5,173 | $ 31,501 | $ 304,055 | $ 0 | $ (375) | $ 3,422
Shares Issued, Beginning Balance (in shares) at Dec. 31, 2010 |  | 5,173,000 |  |  |  |  |
Net income | 81,046 |  |  | 79,423 |  |  | 1,623
Dividends paid | (61,277) |  |  | (61,277) |  |  |
Distributions | (600) |  |  |  |  |  | (600)
Change in unrealized net gain on available-for-sale securities | 0 |  |  |  |  |  |
Deferred stock unit grant | 300 |  | 300 |  |  |  |
Closing Balance, at Dec. 31, 2011 | 363,245 | 5,173 | 31,801 | 322,201 | 0 | (375) | 4,445
Shares Issued, Ending Balance (in shares) at Dec. 31, 2011 |  | 5,173,000 |  |  |  |  |
Net income | 674,993 |  |  | 674,387 |  |  | 606
Dividends paid | (699,791) |  |  | (699,791) |  |  |
Acquisition of the noncontrolling interest | (7,800) |  | (2,749) |  |  |  | (5,051)
Change in unrealized net gain on available-for-sale securities | 1,206 |  |  |  | 1,206 |  |
Deferred stock unit grant | 300 |  | 300 |  |  |  |
Balance, at Dec. 31, 2012 | 332,153 | 5,173 | 29,352 | 296,797 | 1,206 | (375) | 0
Shares Issued, Ending Balance (in shares) at Dec. 31, 2012 | 5,173,450 | 5,173,000 |  |  |  |  |
Net income | 56,915 |  |  | 56,915 |  |  | 0
Dividends paid | (56,197) |  |  | (56,197) |  |  |
Change in unrealized net gain on available-for-sale securities | 316 |  |  |  | 316 |  |
Deferred stock unit grant | 394 |  | 394 |  |  |  |
Other |  |  | (1) |  |  | 1 |
Balance, at Dec. 31, 2013 | $ 333,581 | $ 5,173 | $ 29,745 | $ 297,515 | $ 1,522 | $ (374) | $ 0
Shares Issued, Ending Balance (in shares) at Dec. 31, 2013 | 5,173,450 | 5,173,000 |  |  |  |  |

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