Fair Value Measurements (Details) (USD $)	Jun. 30, 2014	Mar. 31, 2014
Available-for-sale securities, fair value	$ 96,936,178	$ 94,382,401
Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities, fair value	94,502,664	89,934,059
Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities, fair value	$ 2,433,514	$ 4,448,342