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STATEMENTS OF CHANGES IN EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained earnings [Member]
Noncontrolling Interest [Member]
Balance at Dec. 31, 2013 $ 129,131 $ 826 $ 127,060 $ (172) $ 430 $ 987
Balance (in shares) at Dec. 31, 2013   37,155,355        
Issuance of shares 54,726 $ 201 54,525 0 0 0
Issuance of shares (in shares)   6,903,141        
Exercise of stock options 204 $ 2 202 0 0 0
Exercise of stock options (in shares)   115,721        
Stock-based compensation expenses 1,557 $ 0 327 0 0 1,230
Dividend (8,681) 0 0 0 (8,681) 0
Other comprehensive loss (5,354) 0 0 (5,175) 0 (179)
Net income 16,141 0 0 0 15,520 621
Balance at Dec. 31, 2014 187,724 $ 1,029 182,114 (5,347) 7,269 2,659
Balance (in shares) at Dec. 31, 2014   44,174,217        
Issuance of shares (50) $ 0 (50) 0 0 0
Issuance of shares (in shares)   0        
Exercise of stock options 419 $ 6 413 0 0 0
Exercise of stock options (in shares)   161,003        
Stock-based compensation expenses 234 $ 0 220 0 0 14
Acquisition of non-controlling interests (Note 3) (1,744) 0 (1,708) 0 0 (36)
Dividend (8,535) 0 0 0 (7,788) (747)
Other comprehensive loss (1,379) 0 0 (1,348) 0 (31)
Net income 16,437 0 0 0 16,198 239
Balance at Dec. 31, 2015 193,106 $ 1,035 180,989 (6,695) 15,679 2,098
Balance (in shares) at Dec. 31, 2015   44,335,220        
Exercise of stock options 41 $ 1 40 0 0 0
Exercise of stock options (in shares)   20,550        
Stock-based compensation expenses 152 $ 0 103 0 0 49
Exercise of stock options in a subsidiary (292) 0 1,012 0 0 (1,304)
Acquisition of non-controlling interests (Note 3) (3) 0 641 0 0 (644)
Dividend (7,859) 0 0 0 (7,761) (98)
Other comprehensive loss (692) 0 0 (733) 0 41
Net income 12,188 0 0 0 11,907 281
Balance at Dec. 31, 2016 $ 196,641 $ 1,036 $ 182,785 $ (7,428) $ 19,825 $ 423
Balance (in shares) at Dec. 31, 2016   44,355,770