|
Marketable Securities (Fair Value Of Marketable Securities By Maturity) (Details) (USD $)
|
Sep. 30, 2014
|
Mar. 31, 2014
|
|---|---|---|
| Marketable Securities [Abstract] | ||
| Fair Market Value | $ 99,176,144 | $ 94,382,401 |
| Marketable securities, debt maturities due within one year, fair value | 14,624,615 | |
| Marketable securities, debt maturities due after one year through three years, fair value | 46,756,649 | |
| Marketable securities, debt maturities due after three years through five years, fair value | $ 37,794,880 |