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INVESTMENTS (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Investments
Fair value of investment in capital stock	$ 30,591,000		$ 20,988,000
Jinhui Shipping and Transportation Limited
Investments
Investment in the capital stock of Jinhui (in shares)	16,335,100		16,335,100
Fair value of investment in capital stock	30,591,000		20,988,000
Impairment of investment	$ 0	$ 0

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