Restricted Net Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016
Restricted Net Assets (Textual)
Annual appropriations required by statutory reserve fund	At least 10% of after-tax profit, if any, of the relevant PRC VIEs and subsidiary.
Company's restricted net assets	$ 79,627,000	$ 57,324,000