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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands | Total | Common Shares Issued At Par Value [Member] | Capital Surplus [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Total Shareholders' Equity [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of period at Dec. 31, 2009 | $ 893,702 | $ 72,426 | $ 161,409 | $ 1,022,838 | $ 5,130 | $ (376,041) | $ 885,762 | $ 7,940
Net income | 154,190 |  |  | 154,170 |  |  | 154,170 | 20
Cash dividends | (50,378) |  |  | (50,378) |  |  | (50,378) |
Reacquisition on open market | (49,988) |  |  |  |  | (49,988) | (49,988) |
Exercise of stock options, net of shares reacquired | 23,820 |  |  |  |  | 23,820 | 23,820 |
Stock option amortization | 6,102 |  | 6,102 |  |  |  | 6,102 |
Tax benefit — stock options and restricted stock | 3,290 |  | 3,290 |  |  |  | 3,290 |
Restricted stock, net | 5,778 |  | 3,342 |  |  | 2,436 | 5,778 |
Changes in pension and postretirement plan assets and benefit obligation, net of tax | 16,605 |  |  |  | 16,605 |  | 16,605 |
Currency translation adjustment | (10,091) |  |  |  | (10,217) |  | (10,217) | 126
Balance, end of period at Dec. 31, 2010 | 993,030 | 72,426 | 174,143 | 1,126,630 | 11,518 | (399,773) | 984,944 | 8,086
Net income | 26,516 |  |  | 26,315 |  |  | 26,315 | 201
Cash dividends | (56,992) |  |  | (56,992) |  |  | (56,992) |
Reacquisition on open market | (79,999) |  |  |  |  | (79,999) | (79,999) |
Exercise of stock options, net of shares reacquired | 26,205 |  |  |  |  | 26,205 | 26,205 |
Stock option amortization | 6,899 |  | 6,899 |  |  |  | 6,899 |
Tax benefit — stock options and restricted stock | 6,097 |  | 6,097 |  |  |  | 6,097 |
Restricted stock, net | 5,114 |  | 2,155 |  |  | 2,959 | 5,114 |
Changes in pension and postretirement plan assets and benefit obligation, net of tax | (92,757) |  |  |  | (92,757) |  | (92,757) |
Currency translation adjustment | (12,057) |  |  |  | (12,273) |  | (12,273) | 216
Balance, end of period at Dec. 31, 2011 | 822,056 | 72,426 | 189,294 | 1,095,953 | (93,512) | (450,608) | 813,553 | 8,503
Net income | 217,821 |  |  | 216,993 |  |  | 216,993 | 828
Cash dividends | (61,974) |  |  | (61,974) |  |  | (61,974) |
Reacquisition on open market | (49,991) |  |  |  |  | (49,991) | (49,991) |
Exercise of stock options, net of shares reacquired | 16,566 |  |  |  |  | 16,566 | 16,566 |
Stock option amortization | 8,571 |  | 8,571 |  |  |  | 8,571 |
Tax benefit — stock options and restricted stock | 3,603 |  | 3,603 |  |  |  | 3,603 |
Restricted stock, net | 5,627 |  | 3,004 |  |  | 2,623 | 5,627 |
Changes in pension and postretirement plan assets and benefit obligation, net of tax | (39,384) |  |  |  | (39,384) |  | (39,384) | 338
Currency translation adjustment | 4,481 |  |  |  | 4,819 |  | 4,819 |
Balance, end of period at Dec. 31, 2012 | $ 927,376 | $ 72,426 | $ 204,472 | $ 1,250,972 | $ (128,077) | $ (481,410) | $ 918,383 | $ 8,993

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