|
Marketable Securities (Gross Unrealized Losses And Fair Values Of Investments By Investment Category And Length Of Time) (Details) (USD $)
|
6 Months Ended |
12 Months Ended |
|
Sep. 30, 2014
|
Mar. 31, 2014
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
$ 29,377,477 |
$ 36,180,425 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(172,907) |
(251,582) |
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Fair Market Value |
8,368,641 |
|
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses |
(79,103) |
|
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
37,746,118 |
36,180,425 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
(252,010) |
(251,582) |
|
Corporate Bonds [Member]
|
|
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
29,377,477 |
34,761,683 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(172,907) |
(246,973) |
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Fair Market Value |
8,368,641 |
|
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses |
(79,103) |
|
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
37,746,118 |
34,761,683 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
(252,010) |
(246,973) |
|
Municipal Bonds [Member]
|
|
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
|
1,418,742 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
|
(4,609) |
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
|
1,418,742 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
|
$ (4,609) |