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Payables to Securities Brokers	12 Months Ended
Payables to Securities Brokers	Dec. 31, 2014
Brokers and Dealers [Abstract]
Payables to Securities Brokers	12. PAYABLES TO SECURITIES BROKERS As of December 31, 2013 and 2014, the payables to securities brokers were bearing interest at 8% to 11.25% per annum, repayable on demand, and secured by trading and available-for-sale securities (note 13).