|
Marketable Securities (Gross Unrealized Losses And Fair Values Of Investments By Investment Category And Length Of Time) (Details) (USD $)
|
Mar. 31, 2013
|
Mar. 31, 2012
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
$ 1,680,583 |
$ 10,387,955 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(13,342) |
(76,434) |
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Fair Market Value |
|
908,550 |
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses |
|
(32,007) |
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
1,680,583 |
11,296,505 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
(13,342) |
(108,441) |
|
Corporate Bonds [Member]
|
|
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
1,171,976 |
10,387,955 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(4,187) |
(76,434) |
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Fair Market Value |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
1,171,976 |
10,387,955 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
(4,187) |
(76,434) |
|
Municipal Bonds [Member]
|
|
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
508,607 |
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(9,155) |
|
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Fair Market Value |
|
908,550 |
| Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses |
|
(32,007) |
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
508,607 |
908,550 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
$ (9,155) |
$ (32,007) |