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SCHEDULE 1 STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Operating activities:        
Net income (loss) $ (2,202) $ 3,005 $ 384  
Adjustments to reconcile net income to net cash provided by operating activities:        
Share-based compensation 1,465 1,928 1,532  
Share of net loss (income) of an equity method investee (41) 1,113 781  
Changes in operating assets and liabilities:        
Prepaid expenses and other current assets (2,549) 1,736 (1,326)  
Accrued expenses and other current liabilities (3,526) (3,002) (1,680)  
Cash provided by operating activities (3,296) 7,265 3,230  
Investing activities:        
Investment in an equity method investee (1,500) (9,676) (5,606)  
Increase in deposit paid for acquisition of intangible assets       (2,408)  
Net cash used in investing activities 33,791 (26,658) (51,685)  
Financing activities:        
Repurchase of ordinary shares (4,152) (6,251) (9,019)  
Proceeds from exercise of stock options 2,289 671 316  
Cash used in financing activities 6,936 7,131 2,619  
Net (decrease) increase in cash and cash equivalents 37,431 (12,262) (45,836)  
Cash and cash equivalents at the beginning of the year 33,207 42,872 87,706  
Cash and cash equivalents at the end of the year 71,336 33,207 42,872  
Parent Company [Member]
        
Operating activities:        
Net income (loss) (2,202) 3,005 384 (10,398)
Adjustments to reconcile net income to net cash provided by operating activities:        
Share-based compensation 1,465 1,928 1,532  
Share of net income of subsidiaries (1,080) (6,786) (4,058)  
Share of net loss (income) of an equity method investee (50) (28) 81  
Changes in operating assets and liabilities:        
Prepaid expenses and other current assets 30 (186) 88  
Accrued expenses and other current liabilities 1,462 115 30  
Amounts due to subsidiaries 3,440 15,489 16,516  
Cash provided by operating activities 3,065 13,537 14,573  
Investing activities:        
Investment in an equity method investee    (7,076) (4,405)  
Increase in deposit paid for acquisition of intangible assets       (1,100)  
Increase in amounts due from subsidiaries (1,829) (67) (375)  
Capital contribution in subsidiaries       (88)  
Net cash used in investing activities (1,829) (7,143) (5,968)  
Financing activities:        
Repurchase of ordinary shares (4,152) (6,251) (9,019)  
Proceeds from exercise of stock options 2,289 671 316  
Cash used in financing activities (1,863) (5,580) (8,703)  
Net (decrease) increase in cash and cash equivalents (627) 814 (98)  
Cash and cash equivalents at the beginning of the year 1,882 1,068 1,166  
Cash and cash equivalents at the end of the year $ 1,255 $ 1,882 $ 1,068 $ 1,166