Restricted Net Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Restricted Net Assets (Textual)
Annual appropriations required by statutory reserve fund	At least 10% of after-tax profit, if any, of the relevant PRC VIE's and subsidiary.
Company's restricted net assets		$ 77,514,000	$ 71,294,000