Income Tax (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Summary of Pre-tax income in jurisdictions
Pre-tax income	$ 3,495,752	$ 2,672,159	$ 7,292,462	$ 5,318,225
PRC [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	2,863,460	1,582,335	5,548,096	3,350,278
Samoa [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	636,295	882,620	1,462,766	1,713,142
BVI [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	(1,003)	26,204	(2,318)	(38,159)
Others [Member]
Summary of Pre-tax income in jurisdictions
Pre-tax income	$ (3,000)	$ 181,000	$ 283,918	$ 292,964