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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, 84,850 shares; 2015, 43,298 shares |  |  | 0 |  |  |  |
Conversion of common stock units, 2016, 8,538 shares; 2015, 8,293 shares |  |  | 0 |  |  |  |
Conversion of restricted stock units, 2016, 165,794 shares; 2015, 157,539 shares |  |  | 0 |  |  |  |
Options exercised and conversion of common stock units and restricted stock units |  |  |  | 10,882 |  |  |
Share-based compensation expense |  |  |  | 1,965 |  |  |
Net income | $ 34,275 |  |  |  | 34,275 |  |
Cash dividends, 2016, $0.265 per share; 2015, $0.250 per share |  |  |  |  | (10,676) |  |
Change in net unrealized gains and losses on fixed maturities and equity securities | 37,578 | [1],[2] |  |  |  | 37,578 |
Change in net funded status of pension obligations | 0 | [1] |  |  |  | 0 |
Acquisition of shares, 2016, 474,277 shares; 2015, 23,500 shares |  |  |  |  |  |  | (716)
Ending balance at Mar. 31, 2015 | 1,409,771 |  | 64 | 435,079 | 1,088,917 | 322,179 | (436,468)
Beginning balance at Dec. 31, 2015 | 1,264,661 |  | 65 | 442,648 | 1,116,277 | 163,373 | (457,702)
Options exercised, 2016, 84,850 shares; 2015, 43,298 shares |  |  | 0 |  |  |  |
Conversion of common stock units, 2016, 8,538 shares; 2015, 8,293 shares |  |  | 0 |  |  |  |
Conversion of restricted stock units, 2016, 165,794 shares; 2015, 157,539 shares |  |  | 0 |  |  |  |
Options exercised and conversion of common stock units and restricted stock units |  |  |  | 353 |  |  |
Share-based compensation expense |  |  |  | 1,910 |  |  |
Net income | 25,153 |  |  |  | 25,153 |  |
Cash dividends, 2016, $0.265 per share; 2015, $0.250 per share |  |  |  |  | (11,114) |  |
Change in net unrealized gains and losses on fixed maturities and equity securities | 69,490 | [1],[2] |  |  |  | 69,490 |
Change in net funded status of pension obligations | 0 | [1] |  |  |  | 0 |
Acquisition of shares, 2016, 474,277 shares; 2015, 23,500 shares |  |  |  |  |  |  | (14,466)
Ending balance at Mar. 31, 2016 | $ 1,335,987 |  | $ 65 | $ 444,911 | $ 1,130,316 | $ 232,863 | $ (472,168)
[1] | All amounts are net of tax.
[2] | The pretax amounts reclassified from accumulated other comprehensive income (loss), $740 and $5,834, are included in net realized investment gains and losses and the related tax expenses, $259 and $2,042, are included in income tax expense in the Consolidated Statements of Operations for the three months ended March 31, 2016 and 2015, respectively.

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