Income Tax (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Summary of Pre-tax income in jurisdictions
Pre-tax income	$ 4,896,573	$ 7,409,896	$ 8,117,265	$ 10,678,546
PRC [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	4,900,055	7,439,468	8,213,264	10,713,481
BVI [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	(982)	(24,572)	(90,999)	(24,935)
Others [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	$ (2,500)	$ (5,000)	$ (5,000)	$ (10,000)