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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common stock | Additional paid-in capital | Retained earnings | Accumulated other comprehensive income (loss), net of taxes | Treasury stock, at cost
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2014 |  |  | $ 64 | $ 422,232 | $ 1,065,318 | $ 284,601 | $ (435,752)
Options exercised, 2016, 94,225 shares; 2015, 74,233 shares |  |  | 0 |  |  |  |
Conversion of common stock units, 2016, 8,538 shares; 2015, 8,293 shares |  |  | 0 |  |  |  |
Conversion of restricted stock units, 2016, 171,042 shares; 2015, 182,888 shares |  |  | 1 |  |  |  |
Options exercised and conversion of common stock units and restricted stock units |  |  |  | 11,674 |  |  |
Share-based compensation expense |  |  |  | 3,931 |  |  |
Net income | $ 50,458 |  |  |  | 50,458 |  |
Cash dividends, 2016, $0.53 per share; 2015, $0.50 per share |  |  |  |  | (21,371) |  |
Change in net unrealized gains and losses on fixed maturities and equity securities | (73,768) | [1],[2] |  |  |  | (73,768) |
Change in net funded status of pension obligations | 0 | [1] |  |  |  | 0 |
Acquisition of shares, 2016, 701,410 shares; 2015, 23,500 shares |  |  |  |  |  |  | (716)
Ending balance at Jun. 30, 2015 | 1,306,672 |  | 65 | 437,837 | 1,094,405 | 210,833 | (436,468)
Beginning balance at Dec. 31, 2015 | 1,264,661 |  | 65 | 442,648 | 1,116,277 | 163,373 | (457,702)
Options exercised, 2016, 94,225 shares; 2015, 74,233 shares |  |  | 0 |  |  |  |
Conversion of common stock units, 2016, 8,538 shares; 2015, 8,293 shares |  |  | 0 |  |  |  |
Conversion of restricted stock units, 2016, 171,042 shares; 2015, 182,888 shares |  |  | 0 |  |  |  |
Options exercised and conversion of common stock units and restricted stock units |  |  |  | 939 |  |  |
Share-based compensation expense |  |  |  | 3,917 |  |  |
Net income | 37,019 |  |  |  | 37,019 |  |
Cash dividends, 2016, $0.53 per share; 2015, $0.50 per share |  |  |  |  | (22,174) |  |
Change in net unrealized gains and losses on fixed maturities and equity securities | 154,486 | [1],[3] |  |  |  | 154,486 |
Change in net funded status of pension obligations | 0 | [1] |  |  |  | 0 |
Acquisition of shares, 2016, 701,410 shares; 2015, 23,500 shares |  |  |  |  |  |  | (21,513)
Ending balance at Jun. 30, 2016 | $ 1,417,335 |  | $ 65 | $ 447,504 | $ 1,131,122 | $ 317,859 | $ (479,215)
[1] | All amounts are net of tax.
[2] | The pretax amounts reclassified from accumulated other comprehensive income (loss), $1,786 and $7,620, are included in net realized investment gains and losses and the related tax expenses, $625 and $2,667, are included in income tax expense in the Consolidated Statements of Operations for the three and six months ended June 30, 2015, respectively.
[3] | The pretax amounts reclassified from accumulated other comprehensive income (loss), $4,327 and $5,067, are included in net realized investment gains and losses and the related tax expenses, $1,514 and $1,773, are included in income tax expense in the Consolidated Statements of Operations for the three and six months ended June 30, 2016, respectively.

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