3. Fair Value Measurement (Details) (USD $)	Sep. 30, 2014
Cash and cash equivalents	$ 3,275,057
Available-for-sale investments	7,744,285
Assets measured at fair value at September 30, 2014	11,019,342
Level 1
Cash and cash equivalents	3,275,057
Available-for-sale investments	7,744,285
Assets measured at fair value at September 30, 2014	11,019,342
Level 2
Cash and cash equivalents	0
Available-for-sale investments	0
Assets measured at fair value at September 30, 2014	$ 0