Income Taxes (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Summarizes differences between the U.S. statutory federal rate and Company's effective tax rate
U.S. statutory rates	34.00%	34.00%
U.S. effective rate in excess of China tax rate	(10.40%)	(10.40%)
Other	1.40%	1.40%
U.S. valuation allowance	3.80%	3.90%
Total provision for income taxes	28.80%	28.90%