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Consolidated Statements of Equity (USD $)
In Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained Earnings, Unappropriated [Member]
Parent [Member]
Noncontrolling Interest [Member]
Total
Balance at Dec. 31, 2008 $ 114,072 $ 124,446 $ 0 $ (314) $ 224,967 $ 463,171 $ 6,835 $ 470,006
Balance (in shares) at Dec. 31, 2008 380,239   0          
Shares acquisition 0 0 (36,462) 0 0 (36,462) 0 (36,462)
Shares acquisition (in shares) 0   (26,251)          
Shares retirement (7,875) (28,587) 36,462 0 0 0 0 0
Shares retirement (in shares) (26,251)   26,251          
Restricted stock vested 1,207 (1,207) 0 0 0 0 0 0
Restricted stock vested (in shares) 4,024   0          
Share-based compensation expenses 0 8,181 0 0 0 8,181 372 8,553
New shares issued by subsidiary 0 (207) 0 0 0 (207) 1,234 1,027
Sale (purchase) of subsidiary shares to (from) noncontrolling interests 0 285 0 0 0 285 1 286
Dilution gain of equity method investments 0 13 0 0 0 13 0 13
Net unrecognized actuarial loss, net of tax 0 0 0 (41) 0 (41) 19 (22)
Unrealized holding gains (losses) on available-for-sale marketable securities 0 0 0 (105) 0 (105) (1) (106)
Foreign currency translation adjustments 0 0 0 464 0 464 (1) 463
Declaration of cash dividends 0 0 0 0 (55,496) (55,496) 0 (55,496)
Net income (loss) 0 0 0 0 39,650 39,650 (3,840) 35,810
Balance at Dec. 31, 2009 107,404 102,924 0 4 209,121 419,453 4,619 424,072
Balance (in shares) at Dec. 31, 2009 358,012   0          
Shares acquisition 0 0 (10,755) 0 0 (10,755) 0 (10,755)
Shares acquisition (in shares) 0   (7,708)          
Shares retirement (2,312) (8,443) 10,755 0 0 0 0 0
Shares retirement (in shares) (7,708)   7,708          
Restricted stock vested 1,061 (1,061) 0 0 0 0 0 0
Restricted stock vested (in shares) 3,539   0          
Share-based compensation expenses 0 6,219 0 0 0 6,219 92 6,311
New shares issued by subsidiary 0 0 0 0 0 0 353 353
Sale (purchase) of subsidiary shares to (from) noncontrolling interests 0 652 0 0 0 652 152 804
Net unrecognized actuarial loss, net of tax 0 0 0 (201) 0 (201) (2) (203)
Unrealized holding gains (losses) on available-for-sale marketable securities 0 0 0 1,193 0 1,193 22 1,215
Foreign currency translation adjustments 0 0 0 208 0 208 2 210
Declaration of cash dividends 0 0 0 0 (44,097) (44,097) 0 (44,097)
Net income (loss) 0 0 0 0 33,206 33,206 (4,140) 29,066
Balance at Dec. 31, 2010 106,153 100,291 0 1,204 198,230 405,878 1,098 406,976
Balance (in shares) at Dec. 31, 2010 353,843   0          
Shares acquisition 0 0 (4,627) 0 0 (4,627) 0 (4,627)
Shares acquisition (in shares)     (7,534)          
Shares retirement (34) (91) 125 0 0 0 0 0
Shares retirement (in shares) (114)   114          
Restricted stock vested 891 (891) 0 0 0 0 0 0
Restricted stock vested (in shares) 2,971   0          
Share-based compensation expenses 0 4,124 0 0 0 4,124 66 4,190
New shares issued by subsidiary 0 0 0 0 0 0 53 53
Sale (purchase) of subsidiary shares to (from) noncontrolling interests 0 (382) 0 0 0 (382) 1,665 1,283
Net unrecognized actuarial loss, net of tax 0 0 0 (546) 0 (546) (27) (573)
Unrealized holding gains (losses) on available-for-sale marketable securities 0 0 0 (620) 0 (620) (35) (655)
Foreign currency translation adjustments 0 0 0 128 0 128 0 128
Declaration of cash dividends 0 0 0 0 (21,224) (21,224) 0 (21,224)
Net income (loss) 0 0 0 0 10,706 10,706 (1,199) 9,507
Balance at Dec. 31, 2011 $ 107,010 $ 103,051 $ (4,502) $ 166 $ 187,712 $ 393,437 $ 1,621 $ 395,058
Balance (in shares) at Dec. 31, 2011 356,700   (7,420)