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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Shares | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2012 | $ 1,358,321 | $ 9,858 | $ 205,124 | $ 1,682,668 | $ (235,400) | $ (319,877) | $ 15,948
Beginning Balance (in shares) at Dec. 31, 2012 |  | 82,945,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income | 291,687 |  |  | 293,780 |  |  | (2,093)
Unrecognized amounts from defined benefit pension plans, net of tax | 101,151 |  |  |  | 101,151 |  |
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax | 289 |  |  |  | 289 |  |
Currency translation adjustment | (19,955) |  |  |  | (18,136) |  | (1,819)
Cash dividends declared - $1.19, $0.98, and $0.83 per share during the year 2015, 2014 and 2013, respectively | (67,986) |  |  | (67,986) |  |  |
Issuance of shares under benefit plans | 41,153 |  | 33,693 |  |  | 7,460 |
Issuance of shares under benefit plans (in shares) |  | 787,000 |  |  |  |  |
Purchase of shares for treasury | (167,879) |  |  |  |  | (167,879) |
Purchase of shares for treasury (in shares) |  | (2,722,000) |  |  |  |  |
Equity (Increase) Decrease from Transactions with Noncontrolling Interest Holders | (6,093) |  | 1,702 |  | 155 |  | (7,950)
Ending Balance at Dec. 31, 2013 | 1,530,688 | $ 9,858 | 240,519 | 1,908,462 | (151,941) | (480,296) | 4,086
Ending Balance (in shares) at Dec. 31, 2013 |  | 81,010,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income | 253,880 |  |  | 254,686 |  |  | (806)
Unrecognized amounts from defined benefit pension plans, net of tax | (37,200) |  |  |  | (37,200) |  |
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax | (378) |  |  |  | (378) |  |
Currency translation adjustment | (98,365) |  |  |  | (99,099) |  | 734
Cash dividends declared - $1.19, $0.98, and $0.83 per share during the year 2015, 2014 and 2013, respectively | (76,974) |  |  | (76,974) |  |  |
Issuance of shares under benefit plans | 23,578 |  | 19,781 |  |  | 3,797 |
Issuance of shares under benefit plans (in shares) |  | 385,000 |  |  |  |  |
Purchase of shares for treasury | (307,178) |  |  |  |  | (307,178) |
Purchase of shares for treasury (in shares) |  | (4,398,000) |  |  |  |  |
Equity (Increase) Decrease from Transactions with Noncontrolling Interest Holders | (2,270) |  | (1,484) |  | (4) |  | (782)
Ending Balance at Dec. 31, 2014 | $ 1,285,781 | $ 9,858 | 258,816 | 2,086,174 | (288,622) | (783,677) | 3,232
Ending Balance (in shares) at Dec. 31, 2014 | 76,997,161 | 76,997,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income | $ 127,412 |  |  | 127,478 |  |  | (66)
Unrecognized amounts from defined benefit pension plans, net of tax | 98,117 |  |  |  | 98,117 |  |
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax | 557 |  |  |  | 557 |  |
Currency translation adjustment | (106,935) |  |  |  | (106,312) |  | (623)
Cash dividends declared - $1.19, $0.98, and $0.83 per share during the year 2015, 2014 and 2013, respectively | (87,814) |  |  | (87,814) |  |  |
Issuance of shares under benefit plans | 16,513 |  | 14,092 |  |  | 2,421 |
Issuance of shares under benefit plans (in shares) |  | 274,000 |  |  |  |  |
Purchase of shares for treasury | $ (399,494) |  |  |  |  | (399,494) |
Purchase of shares for treasury (in shares) | (6,558,215) | (6,578,000) |  |  |  |  |
Equity (Increase) Decrease from Transactions with Noncontrolling Interest Holders | $ (1,689) |  |  |  | (7) |  | (1,682)
Ending Balance at Dec. 31, 2015 | $ 932,448 | $ 9,858 | $ 272,908 | $ 2,125,838 | $ (296,267) | $ (1,180,750) | $ 861
Ending Balance (in shares) at Dec. 31, 2015 | 70,693,389 | 70,693,000 |  |  |  |  |

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