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Consolidated Statements of Changes in Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Capital | Retained Earnings | Accumulated Other Comprehensive Income | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Shares Issued, Beginning Balance (in shares) at Dec. 31, 2013 |  | 5,173,000 |  |  |  |
Balance, at Dec. 31, 2013 | $ 333,581 | $ 5,173 | $ 29,745 | $ 297,515 | $ 1,522 | $ (374)
Net income | 49,764 |  |  | 49,764 |  |
Dividends paid | (49,825) |  |  | (49,825) |  |
Change in unrealized net gain on available-for-sale securities | 2,644 |  |  |  | 2,644 |
Change in value of interest rate cap | (183) |  |  |  | (183) |
Deferred stock unit grants | 394 |  | 394 |  |  |
Shares Issued, Ending Balance (in shares) at Sep. 30, 2014 |  | 5,173,000 |  |  |  |
Balance, at Sep. 30, 2014 | $ 336,375 | $ 5,173 | 30,139 | 297,454 | 3,983 | (374)
Shares Issued, Beginning Balance (in shares) at Dec. 31, 2014 | 5,173,450 | 5,173,000 |  |  |  |
Balance, at Dec. 31, 2014 | $ 348,399 | $ 5,173 | 30,139 | 299,004 | 14,457 | (374)
Net income | 53,335 |  |  | 53,335 |  |
Dividends paid | (53,675) |  |  | (53,675) |  |
Change in unrealized net gain on available-for-sale securities | (3,527) |  |  |  | (3,527) |
Change in value of interest rate cap | (8) |  |  |  | (8) |
Deferred stock unit grants | $ 600 |  | 600 |  |  |
Shares Issued, Ending Balance (in shares) at Sep. 30, 2015 | 5,173,450 | 5,173,000 |  |  |  |
Balance, at Sep. 30, 2015 | $ 345,124 | $ 5,173 | $ 30,739 | $ 298,664 | $ 10,922 | $ (374)

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