Income Tax (Details 1) (PRC [Member])	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
PRC [Member]
Summary of Reconciliation of PRC statutory rates to the Company's effective tax rate
PRC statutory rate	25.00%	25.00%	25.00%	25.00%
Non-taxable or non-deductible items		(2.30%)	(1.40%)	(1.90%)
Effect of foreign income tax rates	(4.50%)	(8.50%)	(5.00%)	(7.90%)
Other	1.50%	(2.20%)	1.70%	0.70%
Effective income tax rate	22.00%	12.00%	20.30%	15.90%