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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, 114,507 shares; 2015, 80,660 shares |  |  | 0 |  |  |  |
Conversion of common stock units, 2016, 15,629 shares; 2015, 8,293 shares |  |  | 0 |  |  |  |
Conversion of restricted stock units, 2016, 188,207 shares; 2015, 191,998 shares |  |  | 1 |  |  |  |
Options exercised and conversion of common stock units and restricted stock units |  |  |  | 11,926 |  |  |
Share-based compensation expense |  |  |  | 5,032 |  |  |
Net income | $ 72,442 |  |  |  | 72,442 |  |
Cash dividends, 2016, $0.795 per share; 2015, $0.750 per share |  |  |  |  | (31,975) |  |
Change in net unrealized gains and losses on fixed maturities and equity securities | (70,936) | [1],[2] |  |  |  | (70,936) |
Change in net funded status of pension obligations | 0 | [1] |  |  |  | 0 |
Acquisition of shares, 2016, 701,410 shares; 2015, 476,498 shares |  |  |  |  |  |  | (15,775)
Ending balance at Sep. 30, 2015 | 1,307,178 |  | 65 | 439,190 | 1,105,785 | 213,665 | (451,527)
Beginning balance at Dec. 31, 2015 | 1,264,661 |  | 65 | 442,648 | 1,116,277 | 163,373 | (457,702)
Options exercised, 2016, 114,507 shares; 2015, 80,660 shares |  |  | 0 |  |  |  |
Conversion of common stock units, 2016, 15,629 shares; 2015, 8,293 shares |  |  | 0 |  |  |  |
Conversion of restricted stock units, 2016, 188,207 shares; 2015, 191,998 shares |  |  | 0 |  |  |  |
Options exercised and conversion of common stock units and restricted stock units |  |  |  | 2,045 |  |  |
Share-based compensation expense |  |  |  | 6,066 |  |  |
Net income | 63,942 |  |  |  | 63,942 |  |
Cash dividends, 2016, $0.795 per share; 2015, $0.750 per share |  |  |  |  | (33,241) |  |
Change in net unrealized gains and losses on fixed maturities and equity securities | 162,124 | [1],[3] |  |  |  | 162,124 |
Change in net funded status of pension obligations | 0 | [1] |  |  |  | 0 |
Acquisition of shares, 2016, 701,410 shares; 2015, 476,498 shares |  |  |  |  |  |  | (21,513)
Ending balance at Sep. 30, 2016 | $ 1,444,084 |  | $ 65 | $ 450,759 | $ 1,146,978 | $ 325,497 | $ (479,215)
[1] | All amounts are net of tax.
[2] | The pretax amounts reclassified from accumulated other comprehensive income (loss), $1,545 and $9,165, are included in net realized investment gains and losses and the related tax expenses, $541 and $3,208, are included in income tax expense in the Consolidated Statements of Operations for the three and nine months ended September 30, 2015, respectively.
[3] | The pretax amounts reclassified from accumulated other comprehensive income (loss), $3,499 and $8,566, are included in net realized investment gains and losses and the related tax expenses, $1,225 and $2,998, are included in income tax expense in the Consolidated Statements of Operations for the three and nine months ended September 30, 2016, respectively.

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