Organization and Summary of Significant Accounting Policies (Details 1) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Cash balances by geographic area
Total cash and cash equivalents	$ 12,855,900	$ 7,835,791	$ 2,001,106	$ 1,114,873
Total cash and cash equivalents, percentage	100.00%	100.00%
United States [Member]
Cash balances by geographic area
Total cash and cash equivalents	33,020	42,798
Total cash and cash equivalents, percentage	0.30%	0.50%
China [Member]
Cash balances by geographic area
Total cash and cash equivalents	$ 12,822,880	$ 7,792,993
Total cash and cash equivalents, percentage	99.70%	99.50%