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v3.8.0.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | ---
Shares, Outstanding at Dec. 31, 2014 |  | 24,056 |  |  | (4,498) |
Beginning Balance at Dec. 31, 2014 | $ 497,537 | $ 2 | $ 334,074 | $ 464,324 | $ (230,000) | $ (70,863)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net earnings | 55,983 |  |  | 55,983 |  |
Performance share and restricted stock unit awards (in shares) |  | 137 |  |  |  |
Performance share and restricted stock unit awards | 6,021 |  | 6,021 |  |  |
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | 15,315 |  |  |  |  | 15,315
Purchase of treasury stock (in shares) |  |  |  |  | 1,882 |
Purchase of treasury stock | (99,990) |  |  |  | $ (99,990) |
Shares, Outstanding at Dec. 31, 2015 |  | 24,193 |  |  | (6,380) |
Ending Balance at Dec. 31, 2015 | 474,866 | $ 2 | 340,095 | 520,307 | $ (329,990) | (55,548)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net earnings | 49,554 |  |  | 49,554 | $ 0 |
Performance share and restricted stock unit awards (in shares) |  | 30 |  |  |  |
Performance share and restricted stock unit awards | 6,985 |  | 6,985 |  |  |
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | 3,795 |  |  |  |  | 3,795
Purchase of treasury stock (in shares) |  |  |  |  | 1,356 |
Purchase of treasury stock | (65,327) |  |  |  | $ (65,327) |
Shares, Outstanding at Dec. 31, 2016 |  |  |  |  | (7,736) |
Ending Balance at Dec. 31, 2016 | 469,873 | $ 2 | 347,080 | 569,861 | $ (395,317) | (51,753)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net earnings | 97,339 |  |  | 97,339 |  |
Performance share and restricted stock unit awards (in shares) |  | 46 |  |  |  |
Performance share and restricted stock unit awards | 5,327 |  | 5,327 |  |  | 0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | (7,770) | $ 0 |  |  | $ 0 | 7,770
Purchase of treasury stock (in shares) |  |  |  |  | 7,821 |
Purchase of treasury stock | 0 | $ 0 | (351,246) | (48,946) | $ 400,192 |
Shares, Outstanding at Dec. 31, 2017 |  | 16,448 |  |  | 0 |
Ending Balance at Dec. 31, 2017 | $ 575,434 | $ 2 | $ 1,161 | $ 618,254 | $ 0 | $ (43,983)

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