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v3.19.2

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands | Common Stock | Surplus | Retained Earnings | Other Comprehensive Income (Loss) | Treasury Stock | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 96,019 | $ 171,816 | $ 1,891,805 | $ (28,397) | $ (292,263) | $ 1,838,980
Balance (in shares) at Dec. 31, 2017 | 96,019 |  |  |  |  |
Increase (decrease) in shareholders' equity |  |  |  |  |  |
Net Income |  |  | 106,307 |  |  | 106,307
Dividends: |  |  |  |  |  |
Cash ($.50 and $.33 per share) for the six month period ended June 30, 2019 and 2018, respectively) |  |  | (21,814) |  |  | (21,815)
Purchase of treasury stock (1,953, 1,298, 3,258 and 1,298 shares) for the three and six month periods ended June 30, 2019 and 2018, respectively) |  |  |  |  | (57) | (57)
Exercise of stock options | $ 47 | 770 |  |  |  | 818
Exercise of stock options (in shares) | 47 |  |  |  |  |
Stock compensation expense recognized in earnings |  | 470 |  |  |  | 470
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments |  |  |  | (44,973) |  | (44,973)
Balance at Jun. 30, 2018 | $ 96,066 | 173,056 | 1,982,465 | (79,537) | (292,320) | 1,879,730
Balance (in shares) at Jun. 30, 2018 | 96,066 |  |  |  |  |
Balance at Mar. 31, 2018 | $ 96,044 | 172,416 | 1,923,411 | (68,350) | (292,263) | 1,831,258
Balance (in shares) at Mar. 31, 2018 | 96,044 |  |  |  |  |
Increase (decrease) in shareholders' equity |  |  |  |  |  |
Net Income |  |  | 52,887 |  |  | 52,887
Dividends: |  |  |  |  |  |
Purchase of treasury stock (1,953, 1,298, 3,258 and 1,298 shares) for the three and six month periods ended June 30, 2019 and 2018, respectively) |  |  |  |  | (57) | (57)
Exercise of stock options | $ 22 | 355 |  |  |  | 377
Exercise of stock options (in shares) | 22 |  |  |  |  |
Stock compensation expense recognized in earnings |  | 285 |  |  |  | 285
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments |  |  |  | (5,020) |  | (5,020)
Balance at Jun. 30, 2018 | $ 96,066 | 173,056 | 1,982,465 | (79,537) | (292,320) | 1,879,730
Balance (in shares) at Jun. 30, 2018 | 96,066 |  |  |  |  |
Dividends: |  |  |  |  |  |
Cumulative adjustment for adoption of new accounting standards |  |  | 6,167 | (6,167) |  |
Balance at Dec. 31, 2018 | $ 96,104 | 145,283 | 2,064,134 | (54,634) | (311,305) | 1,939,582
Balance (in shares) at Dec. 31, 2018 | 96,104 |  |  |  |  |
Increase (decrease) in shareholders' equity |  |  |  |  |  |
Net Income |  |  | 101,926 |  |  | 101,926
Dividends: |  |  |  |  |  |
Cash ($.50 and $.33 per share) for the six month period ended June 30, 2019 and 2018, respectively) |  |  | (32,821) |  |  | (32,821)
Purchase of treasury stock (1,953, 1,298, 3,258 and 1,298 shares) for the three and six month periods ended June 30, 2019 and 2018, respectively) |  |  |  |  | (128) | (128)
Exercise of stock options | $ 47 | 827 |  |  |  | 874
Exercise of stock options (in shares) | 47 |  |  |  |  |
Stock compensation expense recognized in earnings |  | 504 |  |  |  | 504
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments |  |  |  | 50,382 |  | 50,382
Balance at Jun. 30, 2019 | $ 96,151 | 146,614 | 2,133,239 | (4,252) | (311,433) | 2,060,319
Balance (in shares) at Jun. 30, 2019 | 96,151 |  |  |  |  |
Balance at Mar. 31, 2019 | $ 96,137 | 146,113 | 2,083,219 | (29,405) | (311,359) | 1,984,705
Balance (in shares) at Mar. 31, 2019 | 96,137 |  |  |  |  |
Increase (decrease) in shareholders' equity |  |  |  |  |  |
Net Income |  |  | 50,020 |  |  | 50,020
Dividends: |  |  |  |  |  |
Purchase of treasury stock (1,953, 1,298, 3,258 and 1,298 shares) for the three and six month periods ended June 30, 2019 and 2018, respectively) |  |  |  |  | (74) | (74)
Exercise of stock options | $ 14 | 262 |  |  |  | 276
Exercise of stock options (in shares) | 14 |  |  |  |  |
Stock compensation expense recognized in earnings |  | 239 |  |  |  | 239
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments |  |  |  | 25,153 |  | 25,153
Balance at Jun. 30, 2019 | $ 96,151 | $ 146,614 | $ 2,133,239 | $ (4,252) | $ (311,433) | $ 2,060,319
Balance (in shares) at Jun. 30, 2019 | 96,151 |  |  |  |  |

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