LONG-TERM BANK LOAN (Schedule of Long-term Debt (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Long-term bank loan [Line Items]    
Total long-term bank loan $ 9,152 $ 13,121
Loan from China Construction Bank, Tianjin branch, at 6.72% per annum [Member]    
Long-term bank loan [Line Items]    
Total long-term bank loan 9,152 8,201
Interest rate (as a percent) 6.72%  
Loan from China Construction Bank, Tianjin branch, at 7.25% per annum [Member]    
Long-term bank loan [Line Items]    
Total long-term bank loan    $ 4,920
Interest rate (as a percent) 7.25%  
Long-term bank loan [Member]    
Long-term bank loan [Line Items]    
Interest rate (as a percent) 6.72% 6.72%