Organization and Summary of Significant Accounting Policies (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Cash balances by geographic area
Total cash and cash equivalents	$ 19,522,905	$ 18,790,370	$ 16,806,962	$ 7,835,791
Total cash and cash equivalents, percentage	100.00%	100.00%
United States [Member]
Cash balances by geographic area
Total cash and cash equivalents	$ 2,142	$ 13,142
Total cash and cash equivalents, percentage	0.01%	0.10%
China [Member]
Cash balances by geographic area
Total cash and cash equivalents	$ 19,520,763	$ 18,777,228
Total cash and cash equivalents, percentage	99.99%	99.90%