| Schedule of Held-To-Maturity Investments Estimated Fair Value of Investments |
|
|
Amortized
Cost
|
|
|
Gross
Unrealized
(Losses)
|
|
|
Estimated
Fair Value
|
|
|
December 31, 2014
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit, corporate notes and bonds
|
|
$ |
10,698,982 |
|
|
$ |
(2,209 |
) |
|
$ |
10,696,773 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
September 30, 2015
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit, tri-party repurchase agreement, corporate notes and bonds
|
|
$ |
6,742,987 |
|
|
$ |
(2,814 |
) |
|
$ |
6,740,173 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortized
Cost
|
|
|
Gross
Unrealized
(Losses)
|
|
|
Estimated
Fair Value
|
|
|
2014
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit, commercial paper
|
|
$ |
10,698,982 |
|
|
$ |
(2,209) |
|
|
|
$ |
10,696,773 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2013
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit, commercial paper
|
|
$ |
17,297,165 |
|
|
$ |
(16,493) |
|
|
|
$ |
17,280,672 |
|
|
| Schedule of Maturities of Held-To-Maturity Investments |
|
|
Less than
1 Year
|
|
|
Total
|
|
|
Certificates of deposit, tri-party repurchase agreement, corporate notes and bonds
|
|
$ |
6,742,987 |
|
|
$ |
6,742,987 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Less than
1 Year
|
|
|
Total |
|
|
2014
|
|
|
|
|
|
|
|
|
|
Certificates of deposit, commercial paper
|
|
$ |
10,698,982 |
|
|
$ |
10,698,982 |
|
| |
|
|
|
|
|
|
|
|
|
2013
|
|
|
|
|
|
|
|
|
|
Certificates of deposit, commercial paper
|
|
$ |
17,297,165 |
|
|
$ |
17,297,165 |
|
|