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Unaudited Condensed Consolidated Statement of Equity Statement - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands | Total | Common Stock | Treasury Stock | Capital in Excess of Par Value | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2016 | $ 1,095,247 | $ 195,403 | $ (5,998) | $ 990,203 | $ (103,387) | $ 16,492 | $ 2,534
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Comprehensive income | 256,916 | 0 | 0 | 0 | 243,183 | 13,598 | 135
Dividends declared on common stock | (52,529) | 0 | 0 | (37,010) | (15,519) | 0 | 0
Employee share-based compensation earned | 7,645 | 0 | 0 | 7,645 | 0 | 0 | 0
Stock option exercises | 20,601 | 1,571 | 0 | 19,030 | 0 | 0 | 0
Restricted stock awards, net of forfeitures | 0 | 207 | 0 | (207) | 0 | 0 | 0
Purchase of Company common stock | (120,064) | 0 | (3,970) | (20,675) | (95,419) | 0 | 0
Noncontrolling Interest Payments | (60) | 0 | 0 | 0 | 0 | 0 | (60)
Noncontrolling Interest purchases | 4,580 | 0 | 0 | (2,258) |  | 0 | 2,322
Other | 1,808 | 102 | 0 | 1,706 | 0 | 0 | 0
Balance at end of period at Jun. 30, 2017 | $ 1,204,984 | $ 197,283 | $ (9,968) | $ 958,434 | $ 28,858 | $ 30,090 | $ 287

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