Short-Term Bank Loans (Details Textual)	Dec. 31, 2012
Agricultural and Commercial Bank, Loan due on March 30, 2012 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	7.88%
China Merchants Bank, Loan due on May 20, 2012 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	6.73%
Agricultural and Commercial Bank, Loan due on October 10, 2012 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	5.75%
Agricultural and Commercial Bank, Loan due on August 26, 2013 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	6.90%
Bank of Communications, Loan due on May 14, 2012 [Member]
Short-term bank loans (Textual)
Quarterly adjusted interest rate	7.02%
Bank of Communications, Loan due on May 8, 2013 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	6.72%
Bank of Communications, Loan due on May 23, 2012 [Member]
Short-term bank loans (Textual)
Quarterly adjusted interest rate	7.02%
Bank of Communications, Loan due on May 12, 2013 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	6.72%
Bank of China, Loan due on January 16, 2013 [Member]
Short-term bank loans (Textual)
Short-term loan, interest rate, stated percentage	7.35%