CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands |
Total |
Common stock [Member] |
Additional paid-in capital [Member] |
Retained earnings [Member] |
Accumulated other comprehensive income (loss) [Member] |
Treasury stock [Member] |
Noncontrolling interest [Member] |
|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2014 | $ 60,200 | $ 374,121 | $ (15,823) | $ 116,659 | |||
| Net income | $ 37,459 | 28,578 | 8,881 | ||||
| Foreign currency translation adjustment | (33,031) | (24,092) | (8,939) | ||||
| Shares issued upon exercise of stock options | 451 | ||||||
| Purchase of subsidiary shares from noncontrolling interests | 0 | 0 | |||||
| Sale of subsidiary shares to noncontrolling interest | (6) | 696 | |||||
| Stock-based compensation | 590 | ||||||
| Dividends | (12,089) | (3,836) | |||||
| Balance at Sep. 30, 2015 | 488,958 | $ 31 | 61,235 | 390,610 | (39,915) | $ (36,464) | 113,461 |
| Balance at Dec. 31, 2015 | 476,387 | 62,030 | 388,434 | (48,091) | 110,800 | ||
| Net income | 38,656 | 29,404 | 9,252 | ||||
| Foreign currency translation adjustment | 10,504 | 7,363 | 3,141 | ||||
| Shares issued upon exercise of stock options | 1,235 | ||||||
| Purchase of subsidiary shares from noncontrolling interests | (1,670) | (800) | |||||
| Sale of subsidiary shares to noncontrolling interest | (154) | 1,603 | |||||
| Stock-based compensation | 630 | ||||||
| Dividends | (13,980) | (4,863) | |||||
| Balance at Sep. 30, 2016 | $ 507,548 | $ 31 | $ 62,071 | $ 403,858 | $ (40,728) | $ (36,817) | $ 119,133 |