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Condensed Consolidated Statements Of Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Capital Surplus [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | [1] | Retained Earnings [Member] | Treasury Stock [Member] | Noncontrolling Interests [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 |  | $ 1,480,056 | $ 617 | $ 130,369 | $ (76,953) | $ 1,432,980 | $ (10,302) | $ 3,345
Net income including noncontrolling interests |  | 141,266 |  |  |  | 141,259 |  | 7
Other comprehensive income |  | 337 |  |  | 337 |  |  |
Common stock issued under share-based compensation plans | [2] | 1,492 | 3 | 498 |  | 991 |  |
Tax withholding for common stock issued under share-based compensation plans |  | (4,166) |  | (4,166) |  |  |  |
Common stock issued under employee stock purchase plan |  | 3,583 |  | 3,583 |  |  |  |
Common stock dividends |  | (14,598) |  |  |  | (14,741) |  |
Common stock dividends, accrued dividend shares |  |  |  | 143 |  |  |  |
Repurchase of common stock |  | (29,028) | (6) | (29,022) |  |  |  |
Distributions to noncontrolling interests |  | (2,050) |  |  |  |  |  | (2,050)
Share-based compensation expense |  | 7,000 |  | 7,000 |  |  |  |
Balance at Sep. 30, 2016 |  | 1,583,892 | 614 | 108,405 | (76,616) | 1,560,489 | (10,302) | 1,302
Balance at Dec. 31, 2016 |  | 1,537,942 | 606 | 52,219 | (101,703) | 1,596,269 | (10,302) | 853
Net income including noncontrolling interests |  | 173,995 |  |  |  | 173,995 |  | 0
Other comprehensive income |  | 1,144 |  |  | 1,144 |  |  |
Common stock issued under share-based compensation plans |  | 1 | 2 | (1) |  |  |  |
Tax withholding for common stock issued under share-based compensation plans |  | (3,376) |  | (3,376) |  |  |  |
Common stock issued under employee stock purchase plan |  | 3,459 | 1 | 3,458 |  |  |  |
Common stock dividends |  | (14,266) |  |  |  | (14,390) |  |
Common stock dividends, accrued dividend shares |  |  |  | 124 |  |  |  |
Repurchase of common stock |  | (88,599) | (10) | (55,646) |  | (7,774) | (25,169) |
Distributions to noncontrolling interests |  | 0 |  |  |  |  |  | 0
Share-based compensation expense |  | 7,565 |  | 7,565 |  |  |  |
Balance at Sep. 30, 2017 |  | $ 1,617,865 | $ 599 | $ 4,343 | $ (100,559) | $ 1,748,100 | $ (35,471) | $ 853
[1] | Represents cumulative foreign currency translation adjustments and post retirement liability adjustments.
[2] | Includes a $1.0 million adjustment to retained earnings to recognize net operating loss carryforwards attributable to excess tax benefits on stock compensation upon the adoption of Accounting Standards Update No. 2016-09.

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