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v3.10.0.1

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Treasury Stock [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning at Dec. 31, 2015 | $ 31 | $ 62,030 | $ 388,434 | $ (48,091) | $ (36,817) | $ 110,800 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Shares issued upon exercise of stock options |  | 2,160 |  |  | 142 |  |
Shares received as proceeds of option exercises |  |  |  |  | (800) |  |
Stock-based compensation |  | 839 | 222 |  |  | 147 |
Sale of subsidiary shares to noncontrolling interests |  | (173) |  |  |  | 1,738 |
Purchase of subsidiary shares from noncontrolling interest |  | (1,753) |  |  |  | (1,188) |
Net income |  |  | 33,331 |  |  | 9,917 | $ 43,248
Dividends |  |  | (19,273) |  |  | (4,863) |
Foreign currency translation adjustment, net of tax |  |  |  | (9,874) |  | (3,279) | (13,153)
Transfer from other comprehensive income into earnings |  |  |  |  |  |  |
Net derivative instrument gain, net of tax |  |  |  | (17) |  | (5) |
Balance, ending at Dec. 31, 2016 | 31 | 63,103 | 402,714 | (57,982) | (37,475) | 113,267 | 483,658
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Shares issued upon exercise of stock options |  | 1,963 |  |  |  |  |
Shares received as proceeds of option exercises |  |  |  |  |  |  |
Stock-based compensation |  | 938 | 722 |  |  | 531 |
Sale of subsidiary shares to noncontrolling interests |  |  |  |  |  |  |
Purchase of subsidiary shares from noncontrolling interest |  |  |  |  |  |  |
Net income |  |  | 41,594 |  |  | 13,659 | 55,253
Dividends |  |  | (22,460) |  |  | (6,039) |
Foreign currency translation adjustment, net of tax |  |  |  | 40,096 |  | 15,899 | 55,995
Transfer from other comprehensive income into earnings |  |  |  | 17 |  | 5 |
Net derivative instrument gain, net of tax |  |  |  | 37 |  | 17 |
Balance, ending at Dec. 31, 2017 | 31 | 66,004 | 422,570 | (17,832) | (37,475) | 137,339 | 570,637
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Shares issued upon exercise of stock options |  | 3,406 |  |  |  |  |
Shares received as proceeds of option exercises |  |  |  |  |  |  |
Stock-based compensation |  | 1,132 | 724 |  |  | 419 |
Sale of subsidiary shares to noncontrolling interests |  |  |  |  |  |  |
Purchase of subsidiary shares from noncontrolling interest |  | (572) |  |  |  | (236) |
Net income |  |  | 53,793 |  |  | 15,922 | 69,715
Dividends |  |  | (28,356) |  |  | (8,706) |
Foreign currency translation adjustment, net of tax |  |  |  | (15,917) |  | (6,638) | (22,555)
Transfer from other comprehensive income into earnings |  |  |  | (37) |  |  |
Net derivative instrument gain, net of tax |  |  |  | 136 |  | 39 |
Balance, ending at Dec. 31, 2018 | $ 31 | $ 69,970 | $ 448,731 | $ (33,650) | $ (37,475) | $ 138,139 | $ 585,746

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