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Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income [Member] | Parent [Member] | Noncontrolling Interest [Member] | Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance, Shares, Outstanding at Dec. 31, 2016 |  | 736,531,771 |  |  |  |  |  |  |
Beginning Balance, Equity at Dec. 31, 2016 | $ 265,062 | $ 74 | $ 2,112,728 |  | $ (1,099,010) | $ 58,052 | $ 264,420 | $ 642 | $ 58,249
Beginning Balance, Treasury Stock, Shares at Dec. 31, 2016 |  |  |  | (171,695,908) |  |  |  |  |
Beginning Balance, Treasury Stock, Value at Dec. 31, 2016 | (807,424) |  |  | $ (807,424) |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Cumulative Effect on Retained Earnings, Net of Tax | (3,234) |  |  |  | (3,234) |  | (3,234) |  |
Net loss | (24,221) |  |  |  | (33,681) |  | (33,681) | 9,460 |
Foreign currency translation, net of tax | (27,259) |  |  |  |  | (27,259) |  | 0 | (27,259)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax | (2) |  |  |  |  |  |  | 0 |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax | (585) |  |  |  |  | (585) | (585) |  |
Unrealized gain (loss) on available-for-sale debt security, net of tax | (2,279) |  |  |  |  | (2,279) | (2,279) |  |
Exercise of stock options, shares |  | 84,427 |  |  |  |  |  |  |
Exercise of stock options, value | 203 |  | 203 |  |  |  | 203 |  |
Vesting of restricted stock units, shares |  | 13,293,810 |  |  |  |  |  |  |
Vesting of restricted stock units, value |  | $ 1 | (1) |  |  |  |  |  |
Shares issued under employee stock purchase plan, shares |  | 1,879,656 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan, value | 5,283 |  | 5,283 |  |  |  | 5,283 |  |
Tax withholding related to net share settlements of stock-based compensation awards, shares |  | (5,367,465) |  |  |  |  |  |  |
Tax withholding related to net share settlements of stock-based compensation awards, value | (20,770) | $ 0 | (20,770) |  |  |  | (20,770) |  |
Stock-based compensation on equity-classified awards | 63,696 |  | 63,696 |  |  |  | 63,696 |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  |  | 67,014 |  |  |  |  |  |
Purchases of treasury stock, shares |  |  |  | (16,906,334) |  |  |  |  |
Purchases of treasury stock, value | (60,026) |  |  | $ (60,026) |  |  | (60,026) |  |
Partnership distributions to noncontrolling interest holders | (8,974) |  |  |  |  |  |  | (8,974) |
Ending Balance, Treasury Stock, Shares at Sep. 30, 2017 |  |  |  | (188,602,242) |  |  |  |  |
Ending Balance, Treasury Stock, Value at Sep. 30, 2017 | (867,450) |  |  | $ (867,450) |  |  |  |  |
Ending Balance, Shares, Outstanding at Sep. 30, 2017 |  | 746,422,199.000 |  |  |  |  |  |  |
Ending Balance, Equity at Sep. 30, 2017 | $ 188,066 | $ 75 | $ 2,161,139 |  | $ (1,135,925) | $ 29,099 | $ 186,938 | $ 1,128 | $ 30,990

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