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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Retained earnings | Accumulated other comprehensive income (loss) | Treasury stock
--- | --- | --- | --- | --- | ---
Beginning Balances (in shares) at Dec. 31, 2016 |  | 68,730,731 |  |  | (6,751,179)
Beginning Balances at Dec. 31, 2016 | $ 865,224 | $ 570,382 | $ 437,188 | $ (28,443) | $ (113,903)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 24,414 |  | 24,414 |  |
Other comprehensive income (loss) | 1,804 |  |  | 1,804 |
Cash dividends declared : |  |  |  |  |
Common stock at $0.19 per share in 2018 and $0.17 per share in 2017 | (10,529) |  | (10,529) |  |
Stock Issued During Period, Shares, Other |  |  |  |  | 1,484
Adjustments to Additional Paid in Capital, Other | 0 | (25) |  |  | $ 25
Exercise of stock options, net of shares purchased (in shares) |  |  |  |  | 34,037
Exercise of stock options, net of shares purchased | 197 | (377) |  |  | $ 574
Restricted stock awards, net of forfeitures (in shares) |  |  |  |  | 119,212
Restricted stock awards, net of forfeitures | (2,532) | (3,556) |  |  | $ 1,024
Share-based compensation expense | 1,487 | $ 1,487 |  |  |
Ending Balances (in shares) at Mar. 31, 2017 |  | 68,730,731 |  |  | (6,596,446)
Ending Balances at Mar. 31, 2017 | 880,065 | $ 567,911 | 451,073 | (26,639) | $ (112,280)
Beginning Balances (in shares) at Dec. 31, 2017 |  | 68,730,731 |  |  | (6,661,644)
Beginning Balances at Dec. 31, 2017 | 930,664 | $ 573,109 | 491,847 | (20,390) | $ (113,902)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 30,506 |  | 30,506 |  |
Reclassification from AOCI, Current Period, Tax | 0 |  | 4,942 | (4,942) |
Other comprehensive income (loss) | (9,351) |  |  | (9,351) |
Cash dividends declared : |  |  |  |  |
Common stock at $0.19 per share in 2018 and $0.17 per share in 2017 | (11,797) |  | (11,797) |  |
Stock Issued During Period, Shares, Other |  |  |  |  | 1,428
Adjustments to Additional Paid in Capital, Other | 0 | (24) |  |  | $ 24
Exercise of stock options, net of shares purchased (in shares) |  |  |  |  | 11,800
Exercise of stock options, net of shares purchased | 137 | (65) |  |  | $ 202
Restricted stock awards, net of forfeitures (in shares) |  |  |  |  | 131,508
Restricted stock awards, net of forfeitures | (2,128) | (3,517) |  |  | $ 1,389
Share-based compensation expense | 1,954 | $ 1,954 |  |  |
Ending Balances (in shares) at Mar. 31, 2018 |  | 68,730,731 |  |  | (6,516,908)
Ending Balances at Mar. 31, 2018 | $ 939,985 | $ 571,457 | $ 515,498 | $ (34,683) | $ (112,287)

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