Consolidated Statements Of Shareholders' Equity (USD $)
In Thousands, except Share data
Visiondigi [Member]
Non-Controlling Interest [Member]
Visiondigi [Member]
Common Shares [Member]
Additional Paid- In Capital [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Income [Member]
Accumulated Deficit [Member]
Statutory Reserve [Member]
Non-Controlling Interest [Member]
Total
Balance at Dec. 31, 2008     $ 14 $ 142,681 $ (1,650) $ 9,435 $ (17,019) $ 2,782 $ 36,579 $ 172,822
Balance, shares at Dec. 31, 2008     137,778,145              
Exercise of share options/vested restricted shares (note 14)       36           36
Exercise of share options/vested restricted shares (note 14), shares     1,141,619              
Issuance of common shares     1             1
Issuance of common shares, shares     9,867,404              
Share repurchase         (1,014)         (1,014)
Share repurchase, shares     (1,144,000)              
Share-based compensation expenses - non-employees       39           39
Share-based compensation expenses - employees (note 2)       8,916           8,916
Net loss             (18,767)   (1,914) (20,681)
Foreign currency translation adjustment           48     45 93
Unrealized gain on marketable equity security           2,945       2,945
Reclassification of unrealized gain on marketable equity security upon disposal           (2,461)       (2,461)
Purchase of equity interest in Visiondigi 1,128 1,128                
Balance at Dec. 31, 2009     15 151,672 (2,664) 9,967 (35,786) 2,782 35,838 161,824
Balance, shares at Dec. 31, 2009     147,643,168              
Exercise of share options/vested restricted shares (note 14)       78           78
Exercise of share options/vested restricted shares (note 14), shares     781,628              
Share repurchase         (1,172)         (1,172)
Share repurchase, shares     (1,288,800)              
Share-based compensation expenses - non-employees       19           19
Share-based compensation expenses - employees (note 2)       4,044           4,044
Net loss             (18,644)   (6,463) (25,107)
Foreign currency translation adjustment           1,503     1,032 2,535
Unrealized gain on marketable equity security           1,280       1,280
Reclassification of unrealized gain on marketable equity security upon disposal           (367)       (367)
Capital contribution from non-controlling shareholder       602         2,296 2,898
Balance at Dec. 31, 2010     15 156,415 (3,836) 12,383 (54,430) 2,782 32,703 146,032
Balance, shares at Dec. 31, 2010     147,135,996              
Exercise of share options/vested restricted shares (note 14), shares     116,500              
Issuance of common shares, shares     4,000              
Share repurchase         (2,654)         (2,654)
Share repurchase, shares     (7,303,200)              
Share-based compensation expenses - non-employees       4           4
Share-based compensation expenses - employees (note 2)       2,417           2,417
Net loss             (28,200)   (11,918) (40,118)
Foreign currency translation adjustment           1,835     1,474 3,309
Unrealized gain on marketable equity security           149       149
Reclassification of unrealized gain on marketable equity security upon disposal           (1,517)       (1,517)
Capital contribution from non-controlling shareholder       43         675 718
Balance at Dec. 31, 2011     $ 15 $ 158,879 $ (6,490) $ 12,850 $ (82,630) $ 2,782 $ 22,934 $ 108,340
Balance, shares at Dec. 31, 2011     139,953,296