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Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands | Stockholders' Equity of the Company Preferred Stock [Member] | Stockholders' Equity of the Company Common Stock [Member] | Stockholders' Equity of the Company Treasury Stock [Member] | Stockholders' Equity of the Company Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income (Loss) | Stockholders' Equity of the Company Retained Earnings [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Preferred stock beginning balance, share at Dec. 31, 2012 | 0 |  |  |  |  |  |  |
Common stock beginning balance, share at Dec. 31, 2012 |  | 52,288 |  |  |  |  |  |
Beginning balance,value at Dec. 31, 2012 | $ 0 | $ 522 | $ (428,716) | $ 350,714 | $ 22,981 | $ 540,791 | $ 12,978 | $ 499,270
Net income excluding mandatorily redeemable noncontrolling interest | 0 |  |  |  |  | 67,388 | 3,601 | 70,989
Dividends distributed to noncontrolling interest | 0 |  |  |  |  |  | (4,183) | (4,183)
Purchases of outstanding noncontrolling interest | 0 |  |  | 3,715 |  |  | (4,140) | (425)
Adjustments to redemption value of mandatorily redeemable noncontrolling interest | 0 |  |  |  |  | (1,677) |  | (1,677)
Deconsolidation of a subsidiary | 0 |  |  |  |  |  | (121) | (121)
Foreign currency translation adjustments | 0 |  |  |  | (26,254) |  | (88) | (26,342)
Derivatives valuation, net of tax | $ 0 |  |  |  | (17,911) |  |  | (17,911)
Vesting of restricted stock units, share | 0 | 455 |  |  |  |  |  |
Vesting of restricted stock units, value | $ 0 | $ 5 | 6,530 | (11,509) |  |  |  | (4,974)
Exercise of stock options, share | 0 | 91 |  |  |  |  |  |
Exercise of stock options, value | $ 0 | $ 1 | 1,294 | (433) |  |  |  | 862
Excess tax benefit from equity-based awards | 0 |  |  | 787 |  |  |  | 787
Equity-based compensation expense | $ 0 |  |  | 13,107 |  |  | 34 | 13,141
Purchases of common stock, share | 0 | (2,481) |  |  |  |  |  |
Purchases of common stock, value | $ 0 | $ (25) | (56,507) |  |  |  |  | (56,532)
Other, net of tax | $ 0 |  |  |  | 598 |  |  | 598
Preferred stock ending balance, share at Dec. 31, 2013 | 0 |  |  |  |  |  |  |
Common stock ending balance, share at Dec. 31, 2013 |  | 50,353 |  |  |  |  |  |
Ending balance,value at Dec. 31, 2013 | $ 0 | $ 503 | (477,399) | 356,381 | (20,586) | 606,502 | 8,081 | 473,482
Net income excluding mandatorily redeemable noncontrolling interest | 0 |  |  |  |  | 72,293 | 4,512 | 76,805
Dividends distributed to noncontrolling interest | 0 |  |  |  |  |  | (4,275) | (4,275)
Adjustments to redemption value of mandatorily redeemable noncontrolling interest | 0 |  |  |  |  | (936) |  | (936)
Foreign currency translation adjustments | 0 |  |  |  | (22,771) |  | (349) | (23,120)
Derivatives valuation, net of tax | $ 0 |  |  |  | (9,993) |  |  | (9,993)
Vesting of restricted stock units, share | 0 | 396 |  |  |  |  |  |
Vesting of restricted stock units, value | $ 0 | $ 4 | 5,979 | (11,362) |  |  |  | (5,379)
Exercise of stock options, share | 0 | 58 |  |  |  |  |  |
Exercise of stock options, value | $ 0 | $ 1 | 876 | (434) |  |  |  | 443
Excess tax benefit from equity-based awards | 0 |  |  | 1,015 |  |  |  | 1,015
Equity-based compensation expense | $ 0 |  |  | 11,192 |  |  | 14 | 11,206
Purchases of common stock, share | 0 | (2,354) |  |  |  |  |  |
Purchases of common stock, value | $ 0 | $ (23) | (57,051) |  |  |  |  | (57,074)
Other, net of tax | $ 0 |  |  |  | 1,076 |  |  | $ 1,076
Preferred stock ending balance, share at Dec. 31, 2014 | 0 |  |  |  |  |  |  | 0
Common stock ending balance, share at Dec. 31, 2014 |  | 48,453 |  |  |  |  |  | 48,452,852
Ending balance,value at Dec. 31, 2014 | $ 0 | $ 485 | (527,595) | 356,792 | (52,274) | 677,859 | 7,983 | $ 463,250
Net income excluding mandatorily redeemable noncontrolling interest | 0 |  |  |  |  | 61,666 | 3,382 | 65,048
Dividends to shareholders ($0.18 per common share) | 0 |  |  |  |  | (17,423) |  | (17,423)
Dividends distributed to noncontrolling interest | 0 |  |  |  |  |  | (3,960) | (3,960)
Adjustments to redemption value of mandatorily redeemable noncontrolling interest | 0 |  |  |  |  | (1,113) |  | (1,113)
Foreign currency translation adjustments | 0 |  |  |  | (37,844) |  | (356) | (38,200)
Derivatives valuation, net of tax | 0 |  |  |  | (8,540) |  |  | (8,540)
Vesting of restricted stock units, share |  | 372 |  |  |  |  |  |
Vesting of restricted stock units, value | 0 | $ 4 | 5,768 | (10,016) |  |  |  | $ (4,244)
Exercise of stock options, share |  | 342 |  |  |  |  |  | (894,168)
Exercise of stock options, value | 0 | $ 3 | 5,307 | (9,737) |  |  |  | $ (4,427)
Excess tax benefit from equity-based awards | 0 |  |  | (823) |  |  |  | (823)
Equity-based compensation expense | 0 |  |  | 11,035 |  |  | 152 | $ 11,187
Purchases of common stock, share |  | (686) |  |  |  |  |  | 686,000,000
Purchases of common stock, value | 0 | $ (7) | (17,224) |  |  |  |  | $ (17,231)
Other, net of tax | $ 0 |  |  |  | (2,707) |  |  | $ (2,707)
Preferred stock ending balance, share at Dec. 31, 2015 | 0 |  |  |  |  |  |  | 0
Common stock ending balance, share at Dec. 31, 2015 |  | 48,481 |  |  |  |  |  | 48,481,323
Ending balance,value at Dec. 31, 2015 | $ 0 | $ 485 | $ (533,744) | $ 347,251 | $ (101,365) | $ 720,989 | $ 7,201 | $ 440,817

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